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Onawa, IA Demographics & ZIP Codes
Onawa, Iowa demographics and median household income by ZIP code (in Monona County) — 1 ZIP codes — population 3,388 — median income $60,642 — avg. home value $140,400. Compare income, housing, and population across ZIP codes on US5.
Population
3,388
Median household income (avg.)
$60,642
81% of U.S. median
Average home value
$140,400
40% of U.S. median
Average rent
$647
56% of U.S. median
Median age (avg.)
37.5
Onawa demographics
Onawa, Iowa covers 1 ZIP code primarily in Monona County, with a combined ZIP-area population of about 3,388.
Across ZIP codes with age data, the average median age is about 37.5 years.
Median household income in Onawa
The average median household income across ZIP codes in Onawa, Iowa is about $60,642 — about 18% below the IA ZIP average ($74,194), and about 19% below the U.S. median ($75,149).
The highest median household income among listed ZIPs is about $60,642 in 51040.
Housing in Onawa
For housing in Onawa, Iowa, the average median home value is about $140,400 and the average median rent is about $647.
The most populous ZIP in this set is 51040 (about 3,388 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in Onawa
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 51040 | Onawa | Monona County | IA | 3,388 | $60,642 | $140,400 |
Frequently asked questions
What are the demographics of Onawa?
Onawa, Iowa has a combined ZIP-area population of about 3,388 across 1 ZIP codes (primarily Monona County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in Onawa?
The average median household income across ZIP codes in Onawa, Iowa is about $60,642, about 18% below the state ZIP average ($74,194), and about 19% below the U.S. median ($75,149). Average median home value is about $140,400.
How many ZIP codes are in Onawa?
Onawa, Iowa includes 1 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Onawa?
This page lists ZIP codes in Onawa, Iowa with population, median household income, and home value. Select a ZIP for a full demographics profile.