Groton city, South Dakota
Official LSAD Designation: Groton city • Census GEOID: 4626340
• Brown County
Groton city is an incorporated city in Brown County, South Dakota. According to official records from the Census (2025), Groton city had an estimated population of 1,337 residents. Official Census Bureau geographic records classify this community under LSAD designation Groton city (GEOID 4626340).
Local Government Administration U.S. Census Bureau GMAF
City Of Groton
Municipal
Official Title:
Finance Officer
Address:
PO BOX 587, GROTON SD 57445-0587
County Of Brown
County
Official Title:
Brown County Auditor
Address:
25 MARKET ST, STE 1, ABERDEEN SD 57401-4293
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 1,337 | 2025 |
| Median Household Income | $89,861 | 2020-2024 |
| Median Home Value | $190,600 | 2020-2024 |
| Land Area | 1.75 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).