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2026-05-03 21:22:07

Ranked: The U.S. Cities With the Most Sunshine

This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.

Some U.S. cities average nearly 11 hours of sunshine per day—far more than the national norm.

Using NOAA data and visualized by Julie Peasley, this map ranks the 20 sunniest U.S. cities based on annual sunshine hours.

The results highlight a clear geographic divide. Southwestern cities dominate the top of the list, while Florida—despite its nickname—trails California in total entries.

The Sunniest Cities in America

Arizona dominates the very top of the ranking, with Yuma, Phoenix, and Tucson all placing in the top four. But California has the broader showing, with several cities across the state making the top 20.

Florida still appears on the list, but its “Sunshine State” reputation does not translate into dominance. Miami and Tampa rank highly, though fewer Florida cities make the cut than California cities.

The Southwest: America’s Sunshine Capital

One pattern stands out immediately: geography drives the rankings. The sunniest cities cluster heavily in the U.S. Southwest, particularly Arizona, Nevada, California, and New Mexico.

Cities like Yuma, Phoenix, and Las Vegas benefit from desert climates where clear skies are the norm. Persistent high-pressure systems suppress cloud formation, while low humidity limits the moisture needed for clouds to develop.

In fact, the Southwest is one of the driest regions in North America. As noted in climate studies, limited precipitation and stable air masses create ideal conditions for near-constant sunshine.

Why So Few Clouds?

The Southwest’s sunshine advantage comes down to a simple recipe: dry air, stable weather patterns, and geography.

• Dry air: Desert regions lack the moisture needed to form clouds.
• High pressure systems: These systems promote sinking air, which inhibits cloud formation.
• Topography: Mountain ranges block moisture from the Pacific Ocean.

Together, these conditions create the clear, sunny skies that define cities like Phoenix, whose climate is comparable to global hotspots like Karachi and Baghdad.

Sunshine Beyond the Desert

While the Southwest leads, other regions still make appearances. Cities like Miami and Tampa benefit from tropical climates with strong seasonal sunshine, while Denver and Boise combine elevation with relatively dry air.

The gap across the ranking is striking. Yuma receives more than 1,000 additional sunshine hours per year than cities at the bottom of the top 20—underscoring how extreme the Southwest’s advantage really is.

Learn More on the Voronoi App

Explore how climate shapes cities worldwide in World Cities by Climate Type on the Voronoi app.

2026-05-03 19:42:08

Ranked: Where the World’s Migrants Live Today

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Global migration has surged over the past three decades, reshaping where people live and work worldwide. Today, more than 280 million people live outside their country of birth, with a growing share concentrated in a handful of destinations.

This graphic compares the countries with the largest migrant populations in 1990 and 2024, based on data from the UN DESA International Migrant Stock 2024. It highlights not only the continued dominance of the United States, but also the rapid rise of Europe and the Middle East as key migration hubs.

The U.S. Remains the Top Destination

With 52.4 million migrants in 2024, the United States hosts nearly one in six migrants worldwide—more than the next three countries combined.

This reflects decades of immigration driven by economic opportunity, education, and family reunification.

#	Country	Migrants (1990)	Country	Migrants (2024)
1	United States	23,266,147	United States	52,375,047
2	Russia	11,524,948	Germany	16,750,084
3	India	7,212,791	Saudi Arabia	13,683,841
4	Germany	6,960,112	United Kingdom	11,845,479
5	Ukraine	6,892,920	France	9,186,757
6	Pakistan	6,208,204	Spain	8,870,527
7	France	5,890,023	Canada	8,805,839
8	Saudi Arabia	4,484,868	United Arab Emirates	8,157,000
9	Iran	4,291,601	Australia	8,111,404
10	Canada	4,251,056	Russia	7,605,774
11	Australia	3,991,501	Türkiye	7,083,501
12	United Kingdom	3,664,896	Italy	6,553,671
13	Kazakhstan	3,289,058	Jordan	5,280,168
14	Hong Kong SAR	2,218,473	Ukraine	5,064,173
15	Ivory Coast	1,822,374	India	4,796,255
16	Uzbekistan	1,653,000	Pakistan	4,175,958
17	Argentina	1,647,935	Iran	3,840,654
18	Israel	1,622,505	Malaysia	3,806,514
19	Italy	1,529,367	Japan	3,409,529
20	Sudan	1,402,896	Kuwait	3,323,191

Europe’s Rapid Growth Since 1990

Europe has seen some of the fastest growth in migrant populations since 1990. Spain’s migrant population, for example, has increased nearly fivefold, while Italy and the UK have roughly tripled.

The European Union’s open-border framework has also facilitated migration within the region. At the same time, external migration has increased due to labor demand and geopolitical factors.

Middle East Driven by Labor Demand

In contrast to Western economies, migration to countries like Saudi Arabia and the United Arab Emirates is largely driven by foreign labor demand. These nations have seen rapid growth in migrant populations, particularly in construction, domestic work, and service industries.

Unlike the U.S. and Europe, migration to Gulf countries is largely temporary. In places like Saudi Arabia and the UAE, migrants often make up the majority of the workforce but have limited pathways to permanent residency.

Learn More on the Voronoi App

If you enjoyed today’s post, check out U.S. Immigration By Status, 2001 to 2024 on Voronoi, the new app from Visual Capitalist.

2026-05-03 11:52:41

Mapped: Europe’s Social Media Gap by Country

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Social media use across Europe varies sharply by country, creating a clear gap between the continent’s most and least connected populations.

This map shows the share of adults active on social networking sites across Europe, based on 2025 data from Eurostat and Ofcom. Being “active” in this case involves creating a profile, posting messages, sharing, commenting, or otherwise contributing to a social networking site.

While adoption exceeds 80% in several northern countries, it drops to 56% in Italy and 59% in Germany, two of Europe’s largest economies. Overall, the European average sits at 74%, masking these wide differences in usage.

Northern Europe’s Social Media Craze

Northern Europe stands out as the region with the highest social media adoption rates.

Denmark leads the continent in social media use (90%), followed closely by Norway (89%). Sweden and the Baltic states of Estonia, Latvia, and Lithuania trail slightly behind in the 70–79% range.

This data table shows social media usage rates across European countries.

Rank	Country	Social Media Use (% of Adults)
1	Denmark	90
2	UK	89
3	Norway	89
4	Cyprus	87
5	Montenegro	84
6	Malta	82
7	Finland	81
8	Netherlands	81
9	Turkey	80
10	Ireland	80
11	Romania	80
12	Latvia	79
13	Hungary	79
14	North Macedonia	78
15	Serbia	76
16	Sweden	75
17	Switzerland	74
18	Greece	73
19	Estonia	73
20	Bulgaria	71
21	France	71
22	Portugal	71
23	Lithuania	70
24	Czechia	70
25	Spain	70
26	Austria	68
27	Belgium	68
28	Luxembourg	67
29	Slovenia	65
30	Poland	63
31	Slovakia	62
32	Croatia	62
33	Germany	59
34	Italy	56

Northern Europe’s high usage reflects early and widespread adoption of digital technologies.

Estonia, for example, has earned the moniker “e-Estonia” due to its tech-savvy society and government, while companies ranging from Finland’s Nokia to Sweden’s Spotify rank among Europe’s leading digital success stories.

Even with this reputation, some Scandinavian governments are considering social media bans for children. Denmark, as the continental leader in online activity, is weighing a ban on children’s creation of social media profiles before age 15, or 13–14 with parental consent.

Social Media in Western Europe

Western Europe has long included some of the continent’s most globalized countries. In 2005, university students in the United Kingdom were the first outside North America to join Facebook. Today, 89% of UK adults are active on social media.

However, beyond the UK, social media activity is more limited than in the Nordics. France counts 71% of its adult population on social networking sites, just ahead of Spain and Portugal (both 70%).

For their part, the Benelux countries show an interesting contrast: 81% of Dutch adults use social media, compared to 67–68% in Belgium and Luxembourg.

Italians: The Least Online Europeans

Italy has the lowest social media usage rate in Europe, with just 56% of adults active on social networks. This represents a gap of more than 30 percentage points compared to countries like Denmark, Norway, or the UK.

The contrast also appears generational, as over three-quarters of Italian teens self-report being addicted to their phones.

Germany (59%) is the only country near Italy’s low rate of social media usage. German society appears more divided on the benefits and drawbacks of social networking sites, with nearly half of surveyed Germans in 2025 saying they would rather live in a world without social media.

Learn More on the Voronoi App

To learn more about this topic, check out the What are Gen Z’s Favorite Social Media Platforms? on Voronoi.

2026-05-03 00:21:48

The U.S. Is Split on Legal Marijuana—Here’s Where

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Recreational marijuana is now legal in nearly half of the United States—leaving the country almost evenly divided.

As of 2026, 24 states and Washington D.C. allow adult-use cannabis, while 26 states have yet to legalize it. This narrow gap underscores how legalization has expanded beyond early adopters, while still facing resistance across much of the South and parts of the Midwest.

The map above shows where recreational marijuana is legal for adults over 21, based on data from Encyclopaedia Britannica via NORML, highlighting a country approaching a potential tipping point.

The U.S. Is One State Away From a Majority

As of 2026, 24 U.S. states have legalized recreational marijuana. Washington D.C. has also legalized recreational use, bringing the total to 25 jurisdictions.

The data table below shows which states have and have not legalized recreational marijuana as of May 2026.

Legal states include large population centers such as California, New York, Illinois, Michigan, and New Jersey, as well as smaller states like Vermont, Rhode Island, Maine, and Delaware.

Legalization Follows a Clear Geographic Pattern

Legalization is concentrated along the Pacific Coast and in the Northeast, while much of the South and parts of the Midwest remain holdouts. This divide reflects broader political and cultural differences shaping cannabis policy across the country.

In addition to all states with recreational legalization, 16 states that do not allow recreational use have comprehensive medical marijuana programs.

As a result, just 10 states do not allow marijuana use under any circumstances, aside from limited exceptions for CBD or low-THC products.

Over the past several years, many states have also moved to clear past criminal records for certain marijuana-related offenses.

Ohio, Minnesota, and Delaware Were the Latest to Legalize

The three most recent states to legalize recreational marijuana were Ohio, Minnesota, and Delaware in 2023.

These additions show how legalization is expanding beyond early markets in the West. Ohio and Minnesota brought more of the Midwest into the recreational market, while Delaware added to the already dense cluster of legalized states in the Northeast.

With the U.S. nearly split, even a small shift could tip the balance. If just two or three additional states pass legalization laws, the country would move into majority territory, potentially accelerating changes in taxation, enforcement, and federal policy debates.

Learn More on the Voronoi App

If you enjoyed today’s post, check out Germany Joins List of Nations Legalizing Recreational Cannabis on Voronoi.Use This Visualization

2026-05-02 22:07:23

Ranked: The World’s Most Powerful Passports in 2026

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Your passport shapes how much of the world you can access. In 2026, the gap between the strongest and weakest passports spans nearly 170 destinations.

This graphic ranks global passport strength using data from the Henley Passport Index, based on how many destinations citizens can enter without a visa.

Singapore leads with access to 192 destinations. That’s nearly five times the access available to citizens of the lowest-ranked countries. Meanwhile, the weakest passports allow entry to fewer than 50 destinations. The disparity highlights how geography, diplomacy, and stability influence global mobility.

The Top Passports of Asia and Europe

Following Singapore, there is a three-way tie for the second-strongest passports, with Japan, South Korea, and the United Arab Emirates each offering access to 187 destinations without a visa.

The UAE has the strongest passport outside of East or Southeast Asia, though with a notable caveat: Emiratis lack visa-free access to the United States, unlike their peers in Singapore, Japan, or South Korea.

Rank	Country	Visa-Free Destinations
1	Singapore	192
2	Japan	187
2	South Korea	187
2	UAE	187
5	Norway	185
5	Switzerland	185
7	EU average	183
7	Malaysia	183
7	UK	183
10	Australia	182
10	Canada	182
10	New Zealand	182
13	Liechtenstein	180
14	Iceland	179
14	U.S.	179
16	Monaco	176
17	Chile	174
17	Hong Kong	174
19	Andorra	169
20	Argentina	168
20	Brazil	168

From there, Europeans hold many of the strongest passports by visa-free access, led by Northern and Western European countries like Norway and Switzerland (both 185).

While the 27-member European Union has a unified passport system, individual member countries still vary in visa-free access, ranging from 177 destinations for Bulgaria and Romania to 186 for Sweden.

Taking the average across this range, the EU’s overall passport strength stands at 183 visa-free destinations, tied with countries like Malaysia and the United Kingdom and slightly ahead of North American counterparts like Canada (182) and the United States (179).

The World’s Weakest Passports

At the bottom of the ranking, mobility drops off dramatically. The weakest passports offer access to fewer than 50 destinations, less than a quarter of what top-ranked countries enjoy.

These countries often face political instability, high emigration, or recent conflict, which can limit access to many developed regions.

Rank	Country	Visa-Free Destinations
1	Afghanistan	23
2	Syria	26
3	Iraq	29
4	Pakistan	31
4	Yemen	31
6	Somalia	32
7	Nepal	35
7	North Korea	35
9	Bangladesh	36
10	Eritrea	38
10	Iran	38
10	Palestine	38
13	Libya	39
13	Sri Lanka	39
15	South Sudan	41
15	Sudan	41
17	Ethiopia	42
17	Myanmar	42
20	Lebanon	43
20	Democratic Republic of the Congo	43
22	Nigeria	44

African countries like Nigeria (44), Somalia (32), and the Democratic Republic of the Congo (43) also rank low. Fast-growing populations and large diasporas have contributed to tighter visa restrictions for these nationalities.

A Tale of Two Passports

Taken together, passport rankings reveal more than travel convenience—they map global inequality. Where you’re born can shape where you’re allowed to go, making passport power one of the clearest indicators of opportunity in a connected world.

African, Middle Eastern, and South Asian passports tend to rank lower than their European or Western Hemisphere counterparts. Even higher-ranking exceptions like Malaysia or the UAE can still face limits on visa-free access to major destinations, particularly the United States.

Learn More on the Voronoi App

If you enjoyed today’s post, check out The United Arab Emirates has the World’s Most Affordable Passport on Voronoi.Use This Visualization

2026-05-02 19:32:43

The World’s Most (and Least) Religiously Diverse Countries

This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.

Religious diversity ranges from highly mixed societies to countries where a single faith dominates almost entirely.

This map by Iswardi Ishak shows the Religious Diversity Index (RDI) across 201 countries, based on data from the Pew Research Center. The index measures how evenly populations are distributed across religions, with higher scores indicating a more balanced mix.

Singapore ranks #1 globally, with no single religious group forming a majority. At the other extreme, countries like Yemen and Afghanistan have near-zero diversity, highlighting how uneven religious distribution can be worldwide.

Ranking: Countries by Religious Diversity

Here’s a look at the full dataset on religious diversity by country:

Rank	Country	RDI score	Diversity level
1	Singapore	9.25	Very high
2	Suriname	7.54	Very high
3	Taiwan	7.46	Very high
4	South Korea	7.33	Very high
5	Mauritius	7.33	Very high
6	Guinea-Bissau	7.17	Very high
7	Togo	7.09	Very high
8	Benin	7.05	Very high
9	Australia	6.99	High
10	France	6.93	High
11	Canada	6.91	High
12	United Kingdom	6.88	High
13	Belgium	6.80	High
14	Ivory Coast	6.76	High
15	Netherlands	6.76	High
16	New Zealand	6.67	High
17	Mongolia	6.64	High
18	Mozambique	6.57	High
19	Cuba	6.48	High
20	Germany	6.40	High
21	Malaysia	6.31	High
22	Sweden	6.30	High
23	Estonia	6.21	High
24	Japan	6.18	High
25	Chad	6.18	High
26	Uruguay	6.14	High
27	Switzerland	6.09	High
28	South Sudan	6.09	High
29	Eritrea	6.01	High
30	Bosnia-Herzegovina	5.98	High
31	Guyana	5.90	High
32	United States	5.85	High
33	Luxembourg	5.81	High
34	Nigeria	5.81	High
35	Macao	5.76	High
36	Tanzania	5.72	High
37	Ethiopia	5.71	High
38	Vietnam	5.62	High
39	Sri Lanka	5.61	High
40	Austria	5.58	High
41	Cyprus	5.57	High
42	Laos	5.49	Moderate
43	Slovenia	5.46	Moderate
44	Jamaica	5.45	Moderate
45	Burkina Faso	5.43	Moderate
46	Trinidad and Tobago	5.41	Moderate
47	Russia	5.41	Moderate
48	North Macedonia	5.38	Moderate
49	Lebanon	5.38	Moderate
50	Fiji	5.31	Moderate
51	Hong Kong	5.23	Moderate
52	Cameroon	5.22	Moderate
53	Spain	5.21	Moderate
54	Ghana	5.21	Moderate
55	Chile	5.15	Moderate
56	Norway	5.11	Moderate
57	United Arab Emirates	5.06	Moderate
58	Bahrain	4.91	Moderate
59	Finland	4.84	Moderate
60	Belize	4.83	Moderate
61	Albania	4.75	Moderate
62	North Korea	4.73	Moderate
63	Hungary	4.71	Moderate
64	Czech Republic	4.67	Moderate
65	Madagascar	4.66	Moderate
66	Iceland	4.65	Moderate
67	Qatar	4.63	Moderate
68	Slovakia	4.57	Moderate
69	Bhutan	4.55	Moderate
70	Israel	4.46	Moderate
71	Denmark	4.42	Moderate
72	Montenegro	4.39	Moderate
73	Latvia	4.34	Moderate
74	Barbados	4.21	Moderate
75	Dominican Republic	4.18	Moderate
76	Kazakhstan	4.14	Moderate
77	Bulgaria	4.05	Moderate
78	India	4.03	Moderate
79	Cape Verde	4.02	Moderate
80	Kuwait	3.94	Moderate
81	Italy	3.88	Moderate
82	Nepal	3.85	Moderate
83	Brazil	3.83	Moderate
84	Aruba	3.75	Moderate
85	Sierra Leone	3.71	Moderate
86	Ireland	3.68	Moderate
87	Oman	3.68	Moderate
88	Brunei	3.68	Moderate
89	Botswana	3.51	Moderate
90	Gabon	3.36	Moderate
91	French Guiana	3.28	Moderate
92	Ukraine	3.28	Moderate
93	Vanuatu	3.26	Moderate
94	Sao Tome and Principe	3.20	Moderate
95	South Africa	3.08	Moderate
96	New Caledonia	3.08	Moderate
97	Nicaragua	3.07	Moderate
98	Liberia	3.01	Moderate
99	Portugal	3.00	Moderate
100	Belarus	2.99	Moderate
101	Channel Islands	2.96	Moderate
102	Kenya	2.96	Moderate
103	St. Vincent and the Grenadines	2.87	Moderate
104	Colombia	2.86	Moderate
105	Indonesia	2.72	Moderate
106	Guinea	2.71	Moderate
107	Reunion	2.68	Moderate
108	Zimbabwe	2.66	Moderate
109	Grenada	2.66	Moderate
110	El Salvador	2.65	Moderate
111	Malawi	2.61	Moderate
112	Costa Rica	2.54	Moderate
113	Uganda	2.53	Moderate
114	Venezuela	2.49	Moderate
115	Georgia	2.47	Moderate
116	Malta	2.46	Moderate
117	Equatorial Guinea	2.44	Moderate
118	Argentina	2.44	Moderate
119	Ecuador	2.43	Moderate
120	Honduras	2.42	Moderate
121	Haiti	2.38	Moderate
122	Myanmar	2.36	Moderate
123	Puerto Rico	2.33	Moderate
124	Bolivia	2.33	Moderate
125	Greece	2.27	Moderate
126	China	2.26	Moderate
127	Mexico	2.26	Moderate
128	Namibia	2.05	Moderate
129	Curacao	2.04	Moderate
130	Central African Republic	2.02	Moderate
131	Croatia	1.98	Low
132	Panama	1.92	Low
133	Bangladesh	1.92	Low
134	Poland	1.88	Low
135	Philippines	1.85	Low
136	Serbia	1.85	Low
137	Kyrgyzstan	1.81	Low
138	St. Lucia	1.80	Low
139	Guatemala	1.76	Low
140	Republic of the Congo	1.71	Low
141	Lithuania	1.70	Low
142	Saudi Arabia	1.61	Low
143	Angola	1.52	Low
144	Eswatini	1.48	Low
145	French Polynesia	1.45	Low
146	Paraguay	1.43	Low
147	Seychelles	1.36	Low
148	Guam	1.34	Low
149	Maldives	1.33	Low
150	Mali	1.31	Low
151	Syria	1.30	Low
152	Kosovo	1.26	Low
153	Turkmenistan	1.26	Low
154	Thailand	1.25	Low
155	U.S. Virgin Islands	1.23	Low
156	Peru	1.22	Low
157	Azerbaijan	1.17	Low
158	Burundi	1.13	Low
159	Solomon Islands	1.11	Low
160	Egypt	1.07	Low
161	Uzbekistan	0.99	Very low
162	Guadeloupe	0.94	Very low
163	Martinique	0.90	Very low
164	Democratic Republic of the Congo	0.85	Very low
165	Pakistan	0.79	Very low
166	Gambia	0.68	Very low
167	Rwanda	0.68	Very low
168	Cambodia	0.66	Very low
169	Jordan	0.66	Very low
170	Turkey	0.66	Very low
171	Armenia	0.62	Very low
172	Lesotho	0.61	Very low
173	Senegal	0.56	Very low
174	Kiribati	0.55	Very low
175	Bahamas	0.55	Very low
176	Samoa	0.54	Very low
177	Djibouti	0.53	Very low
178	Tonga	0.51	Very low
179	Niger	0.43	Very low
180	Zambia	0.40	Very low
181	Comoros	0.39	Very low
182	Algeria	0.37	Very low
183	Romania	0.34	Very low
184	Federated States of Micronesia	0.28	Very low
185	Mayotte	0.27	Very low
186	Sudan	0.26	Very low
187	Tajikistan	0.25	Very low
188	Palestinian territories	0.24	Very low
189	Libya	0.23	Very low
190	Papua New Guinea	0.21	Very low
191	Mauritania	0.19	Very low
192	Tunisia	0.16	Very low
193	Iraq	0.12	Very low
194	Moldova	0.11	Very low
195	Timor-Leste	0.11	Very low
196	Western Sahara	0.10	Very low
197	Morocco	0.08	Very low
198	Iran	0.05	Very low
199	Somalia	0.04	Very low
200	Afghanistan	0.03	Very low
201	Yemen	0.03	Very low

Singapore leads the ranking with a score of 9.25, while several countries at the bottom have near-zero diversity, underscoring how wide the global gap is.

Where Religious Diversity Is Highest

Singapore stands apart globally, with no single religion accounting for more than a third of its population. This balance across Buddhism, Christianity, Islam, Hinduism, and unaffiliated groups gives it the highest diversity score in the dataset, well ahead of most countries.

Other highly diverse countries include Suriname and Taiwan, where multiple religions coexist relatively evenly. These countries often share histories shaped by migration, trade, or colonial influence, which help sustain a more diverse mix of religious identities.

Where Diversity Is Lowest

At the other end of the spectrum, several countries in the Middle East and North Africa have diversity scores close to zero. In places like Yemen and Afghanistan, a single religion accounts for nearly the entire population, leaving little variation in religious identity.

In addition, relatively low immigration levels mean fewer new religious communities are introduced over time. Countries like Yemen and Afghanistan also tend to have more ethnically and culturally homogeneous populations, which historically align with a single dominant faith.

By contrast, highly diverse countries typically combine open migration patterns, legal protections for religious freedom, and urban, trade-driven histories that bring multiple belief systems into close contact.

How Diversity Changed Between 2010 and 2020

Globally, religious diversity is rising, but unevenly. Between 2010 and 2020, more countries moved into moderate and high diversity categories, driven largely by migration and shifting religious affiliation. North America saw some of the fastest increases, with both the U.S. and Canada becoming more religiously mixed.

The number of countries classified as having “very low” diversity fell from 48 to 41, while those in the “moderate” category rose from 81 to 89.

Here are the top 10 countries with the biggest increases in religious diversity from 2010 to 2020:

Country	RDI Score 2010	RDI Score 2020	RDI Score Change
Chile	2.8	5.1	+2.3
Ireland	1.8	3.7	+1.9
Malta	0.7	2.5	+1.8
Austria	3.9	5.6	+1.7
Oman	2.1	3.7	+1.6
Belarus	1.4	3	+1.6
United States	4.2	5.8	+1.6
Brazil	2.3	3.8	+1.5
Ecuador	1	2.4	+1.4
Italy	2.5	3.9	+1.4

North America experienced the most significant shift, with an average RDI increase of 1.40. Both the U.S. and Canada moved further into the “high” diversity category, driven by immigration and changing religious affiliation patterns.

While less pronounced than the increases, a few countries did experience declines in religious diversity. Here are the top 10 decreases:

Country	RDI Score 2010	RDI Score 2020	RDI Score Change
Kazakhstan	5.1	4.1	-1.0
Syria	2.2	1.3	-0.9
Vietnam	6.2	5.6	-0.6
Madagascar	5.3	4.7	-0.6
Fiji	5.8	5.3	-0.5
Ivory Coast	7.3	6.8	-0.5
Bahrain	5.4	4.9	-0.5
Albania	5.3	4.8	-0.5
Mozambique	7.1	6.6	-0.5
Zimbabwe	3.2	2.7	-0.5

Overall, the data shows a gradual shift toward greater religious mixing worldwide, though the divide between highly diverse and highly uniform countries remains stark.

Learn More on the Voronoi App

To explore how religions are distributed globally, check out The World’s Three Largest Religions Have a Combined 5 Billion Followers on the Voronoi app.