Watertown city, South Dakota
Official LSAD Designation: Watertown city • Census GEOID: 4669300
• Codington County
Watertown city is an incorporated city in Codington County, South Dakota. According to official records from the Census (2025), Watertown city had an estimated population of 23,736 residents. Official Census Bureau geographic records classify this community under LSAD designation Watertown city (GEOID 4669300).
Local Government Administration U.S. Census Bureau GMAF
City Of Watertown
Municipal
Official Title:
Mayor
Address:
PO BOX 910, WATERTOWN SD 57201-0910
County Of Codington
County
Official Title:
County Auditor
Address:
14 1ST AVE SE, WATERTOWN SD 57201-3611
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 23,736 | 2025 |
| Median Household Income | $69,600 | 2020-2024 |
| Median Home Value | $229,400 | 2020-2024 |
| Land Area | 18.80 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).