Ptolemaida
| Ptolemaida Πτολεμαΐδα | |
|---|---|
| Aerial view of Ptolemaida | |
| Coordinates: 40°31′N 21°41′E / 40.517°N 21.683°E | |
| Country | Greece | 
| Geographic region | Macedonia | 
| Administrative region | Western Macedonia | 
| Regional unit | Kozani | 
| Municipality | Eordaia | 
| Area | |
| • Municipal unit | 217.901 km2 (84.132 sq mi) | 
| • Community | 57.508 km2 (22.204 sq mi) | 
| Elevation | 600 m (2,000 ft) | 
| Population  (2021) | |
| • Municipal unit | 35,334 | 
| • Municipal unit density | 160/km2 (420/sq mi) | 
| • Community | 31,575 | 
| • Community density | 550/km2 (1,400/sq mi) | 
| Time zone | UTC+2 (EET) | 
| • Summer (DST) | UTC+3 (EEST) | 
| Postal code | 502 00 | 
| Area code(s) | 24630 | 
| Vehicle registration | KZ | 
| Website | www.ptolemaida.gr | 
Ptolemaida (Greek: Πτολεμαΐδα, romanized: Ptolemaïda, Katharevousa: Πτολεμαΐς, Ptolemaïs) is a town and a former municipality in Kozani regional unit, Western Macedonia, Greece. Since the 2011 local government reform it is part of the municipality Eordaia, of which it is the seat and a municipal unit. It is known for its coal (lignite) mines and its power stations.