Dayton city, Washington
Official LSAD Designation: Dayton city • Census GEOID: 5316970
• Columbia County
Dayton city is an incorporated city in Columbia County, Washington. According to official records from the Census (2025), Dayton city had an estimated population of 2,538 residents. Official Census Bureau geographic records classify this community under LSAD designation Dayton city (GEOID 5316970).
Local Government Administration U.S. Census Bureau GMAF
City Of Dayton
Municipal
Official Title:
Mayor
Address:
111 S 1ST ST, DAYTON WA 99328-1306
County Of Columbia
County
Official Title:
Chairman
Address:
114 S 2ND ST, DAYTON WA 99328-1341
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 2,538 | 2025 |
| Median Household Income | $70,625 | 2020-2024 |
| Median Home Value | $243,600 | 2020-2024 |
| Land Area | 1.44 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).