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Czech Republic Population and Religion Percentage
The Czech Republic, also known as Czechia and formerly Bohemia, is a landlocked country in Central Europe. At the end of June 2025, the population of the Czech Republic was 10,882,341 or 10.88 million. During the first half of the year, the population decreased by -27,159 . This decline was caused by both an excess of deaths over live births (by 20.3 thousand) and a negative balance of foreign migration (−6.9 thousand). The number of deaths (57.7 thousand) was slightly higher year-on-year. In contrast, the number of live births (37.4 thousand) and marriages (17.3 thousand) decreased significantly.
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| Czech Republic | 30.06.2025 |
|---|---|
| Total Population | 10,882,341 (10.9 million) |
| Land Area | 78,871 km2 (30,452 sq mi) |
| Population Density | 138 people/sq. km |
| Growth Rate | -0.03% (Decline) |
| Fertility Rate | 1.64 |
| Infant Mortality Rate | 2.1 |
| Median Age | 43.8 Years |
| Life Expectancy | 79.85 years |
| Urban Population | 75% |
| Migration Balance | +15.0K |
| Natural Population Change | -18.3K |
Religion in Czech Republic
The Czech Republic is the country with the highest percentage of people who don’t follow or affiliate with any religion. The vast majority of the population (78%) was either irreligious (atheist, agnostic, or other irreligious life stances) or declared neither religious nor irreligious identities. The religious identity of the country has changed drastically since the first half of the 20th century when more than 90% of the Czechs were Christians.
According to the official censuses conducted by the Czech Statistical Office, Christianity is the largest religion followed by 11.7% of the population. Catholicism is the largest branch of Christianity followed by 9.3% of people and other Christian denominations are at 2.4%
Small minority religions in the Czech Republic include Buddhism, Islam, Paganism, Hinduism, Judaism, and others. In the census 2021, 47.8% of the Czechs declared that they did not believe in any religion, while 30.1% did not declare any identification, neither religious nor irreligious.
Religion percentage in the Czech Republic
| Religion/ Affiliations | Percentage |
| Christians | 11.70% |
| – Roman Catholics | – 9.30% |
| – Other Christians | – 2.40% |
| None | 77.9% |
| Unaffiliated/ No religion | 47.80% |
| Undeclared | 30.10% |
| Other Religions | 2.40% |
Source: Czech Statistical Office
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Largest Cities in Czech Republic by Population
| # | City | Population |
| 1 | Prague (Praha) | 13,91,508 |
| 2 | Brno | 3,77,028 |
| 3 | Ostrava | 3,14,590 |
| 4 | Plzeň | 1,77,936 |
| 5 | Liberec | 1,05,229 |
| 6 | Olomouc | 1,02,134 |
| 7 | Ústí nad Labem | 1,00,884 |
| 8 | Hradec Králové | 1,00,090 |
| 9 | České Budějovice | 95,709 |
| 10 | Flag of Pardubice.svg Pardubice | 90,755 |
| 11 | Havířov | 83,233 |
