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Croatia Population and Religion Percentage
Croatia, officially known as the Republic of Croatia, is a country situated at the crossroads of Central and Southeast Europe along the Adriatic Sea. According to the Croatian Bureau of Statistics, as of January 1, 2024, the estimated population of Croatia was 3,859,686 (approximately 3.8 million). The most populous area is the City of Zagreb, with 771,062 residents, followed by Split-Dalmatia County with 426,054 residents, and Osijek-Baranja County with 252,885 residents.
Estimated Population of Croatia in 2026: 3,941,962 (3.9 million)
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| Croatia | 2026 Est. |
| Total Population | 3,941,962 |
| Global Rank | 130 |
| Land Area | 55,974 sq. km (21,612 sq. mi) |
| Area Rank | 124 |
| Pop. Density | 69 people/sq. km |
| Capital City | Zagreb |
| Fertility Rate | 1.47 |
| Infant mortality rate | 3.4 |
| Median Age | 45.3 Years |
| Life Expectancy | 78.75 years |
| Urban Population | 61.7% |
Religion in Croatia
Christianity is the majority religion in Croatia and it is followed by 88% of the population. The largest grouping among Christians is the Roman Catholics. Among Christians, 78.97% of the population follows Catholicism, and 3.32% follows Eastern Orthodoxy. The rest consists mainly of Protestantism, Jehovah’s Witnesses, and Other Christians.
Islam accounts for 1.32%, other religions are at 1.87%, and the remaining 10.25% are classified as unaffiliated, which can mean agnostic, atheist, or “nothing in particular.”
Other smaller religions practiced in Poland, include Judaism, Hinduism, and Buddhism.
Religion Percentage in Croatia 2021
| Religion/ Affiliations | Percentage |
| Christianity | 87.39% |
| – Catholicism | -78.97% |
| – Eastern Orthodoxy | -3.32% |
| – Protestantism | -0.26% |
| – Other Christian | -4.84% |
| Others | |
| Unaffiliated | 6.39% |
| Smaller faiths | 1.87% |
| Islam | 1.32% |
| Unknown/Undeclared | -3.86% |
Source: Census 2021
Largest Cities in Croatia by Population
| # | County | Population |
|---|---|---|
| 1 | City of Zagreb | 771,062 |
| 2 | Split-Dalmatia | 426,054 |
| 3 | Zagreb | 304,354 |
| 4 | Primorje-Gorski Kotar | 264,572 |
| 5 | Osijek-Baranja | 252,885 |
| 6 | Istria | 199,541 |
| 7 | Zadar | 162,255 |
| 8 | Varaždin | 158,554 |
| 9 | Vukovar-Srijem | 139,105 |
| 10 | Sisak-Moslavina | 136,041 |
| 11 | Slavonski Brod-Posavina | 127,262 |
| 12 | Krapina-Zagorje | 119,409 |
| 13 | Dubrovnik-Neretva | 115,370 |
| 14 | Karlovac | 110,418 |
| 15 | Međimurje | 104,937 |
| 16 | Koprivnica-Križevci | 99,740 |
| 17 | Bjelovar-Bilogora | 99,352 |
| 18 | Šibenik-Knin | 95,711 |
| 19 | Virovitica-Podravina | 68,423 |
| 20 | Požega-Slavonia | 61,910 |
| 21 | Lika-Senj | 42,731 |
Source: Census 2023