Columbia County, Washington
11 public bodies govern here, 2 school districts are based here, and USDA lists 0 farmers markets. Everything below says where it came from.
In four numbers
- People
- 4,014
- Median household income
- $71,810
- ±5,338
- Unemployed
- 3.9%
- 71 of 1,834 in the labour force
- Homes with broadband
- 82.4%
- 1,534 of 1,862 households
U.S. Census Bureau, American Community Survey 5-year estimates 2020-2024; read 2026-09-26. Percentages worked out here from the two counts shown.
Who governs here
County government 1
| Name | People | Office | Website |
|---|---|---|---|
| County of Columbia | 4,042 (2021) | 114 S 2nd St, Dayton | Website |
Cities, towns and villages 2
Special districts 8
| Name | What it does | Office | Website |
|---|---|---|---|
| Columbia County (dayton General) Hospital District 1 | Hospitals | 1012 S 3rd St, Dayton | Website |
| Columbia County Hearn Irrigation District | Irrigation | 635 Harlem Road, Dayton | — |
| West End Irrigation District | Irrigation | 719 W Commercial Ave, Dayton | — |
| Columbia County Rural Library District | Libraries | Po Box 74, Dayton | Website |
| Columbia County Fire Protection District 1 | Local fire protection | Po Box 325, Starbuck | — |
| Columbia County Fire Protection District 2 | Local fire protection | Po Box 151, Waitsburg | — |
| Columbia County Fire Protection District 3 | Local fire protection | Po Box 66, Dayton | — |
| Port of Columbia | Other multi-function districts | 1 Port Way, Dayton | Website |
U.S. Census Bureau, 2022 Census of Governments, Government Units List (published August 2023); the file read 2026-09-26. Offices are placed by county; a special district’s territory can cross county lines. Each body posts its own meetings on its website where the Census records one.
School districts based here
Dayton School District
School district4 schools
609 S 2ND ST, Dayton, WA, 99328
Its website — where its board posts meetings. Federal record.
Starbuck School District
School district2 schools
717 TUCANNON ST, Starbuck, WA, 99359
Its website — where its board posts meetings. Federal record.
National Center for Education Statistics, Common Core of Data 2024-25; read 2026-09-26.
Farmers markets
USDA’s directory lists no farmers market in this county. That is not the same as there being none: a market that never registered with USDA, and was not found by its 2023 web sweep, is not in the directory.
In the counties that border this one
Pomeroy Farmers Market (201 S 15th St Pomeroy)
Hermiston Saturday Market (Hermiston)
College Place Farmers & Artisan Market (College Place) · Downtown Farmers' Market (Walla Walla)
Wallowa County Farmers' Market (Enterprise) · Lower Valley Farmers Market (Wallowa)
Pullman Farmers Market (Pullman)
Which counties border which: U.S. Census Bureau, County Adjacency File (2024), the file read 2026-09-26. Bordering is not distance — counties that touch at one corner border each other.
USDA National Farmers Market Directory; read 2026-09-26.