Onida city, South Dakota
Official LSAD Designation: Onida city • Census GEOID: 4647180
• Sully County
Onida city is an incorporated city in Sully County, South Dakota. According to official records from the Census (2025), Onida city had an estimated population of 640 residents. Official Census Bureau geographic records classify this community under LSAD designation Onida city (GEOID 4647180).
Local Government Administration U.S. Census Bureau GMAF
City Of Onida
Municipal
Official Title:
Finance Officer
Address:
PO BOX 72, ONIDA SD 57564-0072
County Of Sully
County
Official Title:
Chairman
Address:
PO BOX 265, ONIDA SD 57564-0265
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 640 | 2025 |
| Median Household Income | $70,000 | 2020-2024 |
| Median Home Value | $178,600 | 2020-2024 |
| Land Area | 0.67 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).