Unisan, Quezon
| Unisan Kalilayan | |
|---|---|
| Municipality of Unisan | |
| Barangay R. Magsaysay | |
| Nickname: Old Capital of Kalilayan Province | |
| Map of Quezon with Unisan highlighted | |
| OpenStreetMap | |
| Location within the Philippines | |
| Coordinates: 13°50′29″N 121°58′31″E / 13.84132°N 121.97522°E | |
| Country | Philippines | 
| Region | Calabarzon | 
| Province | Quezon | 
| District | 3rd district | 
| Founded | 1521 or 1578 | 
| Reestablished | February 18, 1876 | 
| Founded by | Malay settlers (1521) Juan de Plasencia and Diego de Oropesa (1578) | 
| Barangays | 36 (see Barangays) | 
| Government | |
| • Type | Sangguniang Bayan | 
| • Mayor | Jose Mumar P. Veluz | 
| • Vice Mayor | Filomena M. Cabutihan | 
| • Representative | Reynante U. Arrogancia | 
| • Municipal Council | Members | 
| • Electorate | 19,107 voters (2025) | 
| Area | |
|  • Total | 124.15 km2 (47.93 sq mi) | 
| Elevation | 21 m (69 ft) | 
| Highest elevation | 172 m (564 ft) | 
| Lowest elevation | 0 m (0 ft) | 
| Population  (2020 census) | |
|  • Total | 25,448 | 
| • Density | 200/km2 (530/sq mi) | 
| • Households | 6,697 | 
| Demonym | Unisanin | 
| Economy | |
| • Income class | 4th municipal income class | 
| • Poverty incidence | 20.19 | 
| • Revenue | ₱ 164.4 million (2022) | 
| • Assets | ₱ 378.8 million (2022) | 
| • Expenditure | ₱ 133.9 million (2022) | 
| • Liabilities | ₱ 62.8 million (2022) | 
| Service provider | |
| • Electricity | Quezon 1 Electric Cooperative (QUEZELCO 1) | 
| Time zone | UTC+8 (PST) | 
| ZIP code | 4305 | 
| PSGC | |
| IDD : area code | +63 (0)42 | 
| Native languages | Tagalog | 
Unisan, officially the Municipality of Unisan (Tagalog: Bayan ng Unisan), is a municipality in the province of Quezon, Philippines. According to the 2020 census, it has a population of 25,448 people.