Castalia city, Iowa
Official LSAD Designation: Castalia city • Census GEOID: 1911485
• Winneshiek County
Castalia city is an incorporated city in Winneshiek County, Iowa. According to official records from the Census (2025), Castalia city had an estimated population of 142 residents. Official Census Bureau geographic records classify this community under LSAD designation Castalia city (GEOID 1911485).
Local Government Administration U.S. Census Bureau GMAF
City Of Castalia
Municipal
Official Title:
Castalia City Clerk
Address:
108 WEST GREENE ST, CASTALIA IA 52133-0127
County Of Winneshiek
County
Official Title:
Supervisor
Address:
201 W MAIN ST, DECORAH IA 52101-1775
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 142 | 2025 |
| Median Household Income | $61,250 | 2020-2024 |
| Median Home Value | $97,500 | 2020-2024 |
| Land Area | 0.58 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).