| Name | Adams County |
| State | Washington |
| FIPS Code | 53001 |
| County Seat | Ritzville |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2024) | 20,857 |
| Population Growth Rate(2020-2024) | 1.18% |
| Majority Ethnicity | Hispanic 55.43% |
| Public School Majority Ethnicity | Hispanic 82% |
| Partisan Voting Index | Republican:+20 |
| Unemployment Rate (May 2026) | 6.8% |
| Sales Tax Rate (2025) | 8% |
| Area Code(s) | 509 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 41.32% |
| African American | 0.32% |
| Hispanic | 55.43% |
| Asian | 0.54% |
| Native American | 2.16% |
| Hawaiin/Pacific Islander | 0.23% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 15.82% |
| African American | 0.35% |
| Hispanic | 82.4% |
| Asian | 0.3% |
| Native American | 0.15% |
| Hawaiin/Pacific Islander | 0.04% |