| ZIP Code | 51010 |
|---|---|
| City | Castana |
| State | Iowa (IA) |
| County | Monona County |
| Area Code | 712 |
| Elevation | 1,331 ft |
| Latitude | 42.097526 |
|---|---|
| Longitude | -95.938189 |
| Timezone | Chicago (DST) |
| FIPS | 19133 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 57.5 yrs ↓ 5% since 2019 |
|---|---|
| Avg Household Size | 2.04 |
| Below Poverty | 4.6% ▼ 54% below avg |
| College Grads | 22.8% ▼ 41% below avg |
| Unemployment | 1.0% ▼ 79% below avg |
| HS Graduate | 148 (43.8%) |
| Some College | 49 (14.5%) |
| Associates | 64 (18.9%) |
| Bachelors | 41 (12.1%) |
| Graduate Degree | 36 (10.7%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $92,083 ▲ 21% above avg ↑ 52% since 2019 |
|---|---|
| Median Home Value | $107,900 ▼ 61% below avg ↑ 44% since 2019 |
| Home/Income Ratio | 1.2x (nat avg ~3.5x) |
| Median Rent | $725/mo ↑ 13% since 2019 |
| Total Units | 243 |
| Vacant Units | 39 |
| Avg HH Size | 2.04 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 243 |
|---|---|
| Vacant | 39 |
| Owner Occupied | 86.3% |
| Renter Occupied | 13.7% |
| Avg HH Size | 2.04 |
ZIP code 51010 is located in Castana, Iowa, within Monona County. With a population of 416, this is a sparsely populated ZIP code with an older community — the median age is 57.5 years. Economically, 51010 is a middle-income ZIP code: the median household income of $92,083 is above the national average.
Real estate in ZIP code 51010 represents one of the more affordable housing markets in the country. The median home value of $107,900 is well below the national average. Renters can expect to pay around $725 per month in median rent. Homeownership is strong here — 86.3% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 44% since 2019.
The population of 51010 is primarily White (96.39%). Residents are less-educated — 22.8% hold a bachelor's degree or higher, which is below the national average. Poverty affects a relatively small share of residents at 4.6%. Household income has grown by 52% since 2019.
The unemployment rate in 51010 stands at 1.0%, which is well below the national average. As in most parts of the country, driving alone is the dominant commute mode at 89%.
Overall, ZIP code 51010 in Castana, IA is characterized as middle-income, less-educated, an older community, and predominantly owner-occupied. With 416 residents, a median household income of $92,083, and a median home value of $107,900, it offers a clear picture of life in this part of Iowa.