Onamia city, Minnesota
Official LSAD Designation: Onamia city • Census GEOID: 2748310
• Mille Lacs County
Onamia city is an incorporated city in Mille Lacs County, Minnesota. According to official records from the Census (2025), Onamia city had an estimated population of 839 residents. Official Census Bureau geographic records classify this community under LSAD designation Onamia city (GEOID 2748310).
Local Government Administration U.S. Census Bureau GMAF
City Of Onamia
Municipal
Official Title:
City Clerk Treas
Address:
PO BOX 186, ONAMIA MN 56359-0186
County Of Mille Lacs
County
Official Title:
Personnel Director
Address:
635 2ND ST SE, MILACA MN 56353-1305
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 839 | 2025 |
| Median Household Income | $32,750 | 2020-2024 |
| Median Home Value | $122,900 | 2020-2024 |
| Land Area | 0.97 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).