Olympia
- County:
- Thurston County
- County Seat:
- Yes
- Area (mi²):
- 18.221
- State:
- Washington
Olympia is a city located in Thurston County, Washington. Olympia has a 2026 population of 56,271. It is also the county seat of Thurston County. Olympia is currently growing at a rate of 0.65% annually and its population has increased by 1.19% since the most recent census, which recorded a population of 55,609 in 2020.