| Name | Columbia County |
| State | Washington |
| FIPS Code | 53013 |
| County Seat | Dayton |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2024) | 4,055 |
| Population Growth Rate(2020-2024) | 2.49% |
| Majority Ethnicity | White 89.75% |
| Public School Majority Ethnicity | White 74% |
| Partisan Voting Index | Strongly Republican:+22 |
| Unemployment Rate (May 2026) | 5.4% |
| Sales Tax Rate (2025) | 8.2% |
| Area Code(s) | 509 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 89.75% |
| African American | 0.77% |
| Hispanic | 9.01% |
| Asian | 0.03% |
| Native American | 0.44% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 74% |
| African American | 5.89% |
| Hispanic | 13.86% |
| Asian | 1.73% |
| Native American | 1.21% |
| Hawaiin/Pacific Islander | 1.04% |