| Osek | |
|---|---|
|   Centre of Osek | |
| Coordinates: 49°49′11″N13°51′31″E / 49.81972°N 13.85861°E | |
| Country |  Czech Republic | 
| Region | Central Bohemian | 
| District | Beroun | 
| First mentioned | 1543 | 
| Area | |
|  • Total | 4.97 km2 (1.92 sq mi) | 
| Elevation | 400 m (1,300 ft) | 
| Population  (2025-01-01) [1]  | |
|  • Total | 857 | 
| • Density | 170/km2 (450/sq mi) | 
| Time zone | UTC+1 (CET) | 
| • Summer (DST) | UTC+2 (CEST) | 
| Postal code | 267 62 | 
| Website | www | 
Osek is a municipality and village in Beroun District in the Central Bohemian Region of the Czech Republic. It has about 900 inhabitants.
| Year | Pop. | ±% | 
|---|---|---|
| 1869 | 647 | — | 
| 1880 | 667 | +3.1% | 
| 1890 | 732 | +9.7% | 
| 1900 | 794 | +8.5% | 
| 1910 | 884 | +11.3% | 
| 1921 | 1,018 | +15.2% | 
| 1930 | 1,024 | +0.6% | 
| 1950 | 979 | −4.4% | 
| 1961 | 834 | −14.8% | 
| 1970 | 793 | −4.9% | 
| 1980 | 829 | +4.5% | 
| 1991 | 747 | −9.9% | 
| 2001 | 760 | +1.7% | 
| 2011 | 761 | +0.1% | 
| 2021 | 818 | +7.5% | 
| Source: Censuses [2] [3] | ||