Moses Lake
- County:
- Grant County
- County Seat:
- No
- Area (mi²):
- 18.136
- State:
- Washington
Moses Lake is a city located in Grant County, Washington. Moses Lake has a 2026 population of 26,969. Moses Lake is currently growing at a rate of 2.22% annually and its population has increased by 6.04% since the most recent census, which recorded a population of 25,434 in 2020.