Castana city, Iowa
Official LSAD Designation: Castana city • Census GEOID: 1911530
• Monona County
Castana city is an incorporated city in Monona County, Iowa. According to official records from the Census (2025), Castana city had an estimated population of 103 residents. Official Census Bureau geographic records classify this community under LSAD designation Castana city (GEOID 1911530).
Local Government Administration U.S. Census Bureau GMAF
City Of Castana
Municipal
Official Title:
Mayor
Address:
PO BOX 150, CASTANA IA 51010-0150
County Of Monona
County
Official Title:
Monona County Auditor
Address:
610 IOWA AVE, ONAWA IA 51040-1671
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 103 | 2025 |
| Median Household Income | $55,469 | 2020-2024 |
| Median Home Value | $74,400 | 2020-2024 |
| Land Area | 0.91 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).