| ZIP Code | 51040 |
|---|---|
| City | Onawa |
| State | Iowa (IA) |
| County | Monona County |
| Area Code | 712 |
| Elevation | 1,036 ft |
| Latitude | 42.03254 |
|---|---|
| Longitude | -96.068714 |
| Timezone | Chicago (DST) |
| FIPS | 19133 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 37.5 yrs ↓ 11% since 2019 |
|---|---|
| Avg Household Size | 2.17 |
| Below Poverty | 14.2% ▲ 42% above avg |
| College Grads | 28.0% ▼ 28% below avg |
| Unemployment | 1.4% ▼ 72% below avg |
| No HS Diploma | 15 (0.7%) |
| HS Graduate | 849 (38.1%) |
| Some College | 261 (11.7%) |
| Associates | 478 (21.5%) |
| Bachelors | 221 (9.9%) |
| Graduate Degree | 402 (18.1%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $60,642 ▼ 21% below avg ↑ 47% since 2019 |
|---|---|
| Median Home Value | $140,400 ▼ 50% below avg ↑ 43% since 2019 |
| Home/Income Ratio | 2.3x (nat avg ~3.5x) |
| Median Rent | $828/mo ↑ 36% since 2019 |
| Total Units | 1,677 |
| Vacant Units | 160 |
| Avg HH Size | 2.17 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 1,677 |
|---|---|
| Vacant | 160 |
| Owner Occupied | 73.8% |
| Renter Occupied | 26.2% |
| Avg HH Size | 2.17 |
ZIP code 51040 is located in Onawa, Iowa, within Monona County. With a population of 3,388, this is a sparsely populated ZIP code with a relatively young community — the median age is 37.5 years. Economically, 51040 is a solidly middle-class ZIP code: the median household income of $60,642 is below the national average.
Real estate in ZIP code 51040 represents one of the more affordable housing markets in the country. The median home value of $140,400 is below the national average. Renters can expect to pay around $828 per month in median rent. Homeownership is strong here — 73.8% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 43% since 2019.
The population of 51040 is primarily White (92.00%). Residents are moderately educated — 28.0% hold a bachelor's degree or higher, which is below the national average. Poverty affects some residents at 14.2%. Household income has grown by 47% since 2019.
The unemployment rate in 51040 stands at 1.4%, which is well below the national average. As in most parts of the country, driving alone is the dominant commute mode at 80%.
Overall, ZIP code 51040 in Onawa, IA is characterized as solidly middle-class, moderately educated, a relatively young community, and predominantly owner-occupied. With 3,388 residents, a median household income of $60,642, and a median home value of $140,400, it offers a clear picture of life in this part of Iowa.