
Issaquah
- County:
- King County
- County Seat:
- No
- Area (mi²):
- 12.13
- State:
- Washington
Issaquah is a city located in King County, Washington. Issaquah has a 2025 population of 38,232. Issaquah is currently declining at a rate of -0.96% annually and its population has decreased by -4.64% since the most recent census, which recorded a population of 40,094 in 2020.
The average household income in Issaquah is $211,653 with a poverty rate of 5.91%. The median age in Issaquah is 37.2 years: 37.5 years for males, and 36.8 years for females.