ZIP codes
9
Monona County, IA Demographics & ZIP Codes
Monona County, Iowa demographics and median household income by ZIP code — 9 ZIP codes — population 8,749 — avg. income $68,831 — avg. home value $118,122. Compare income, housing, and ZIP-level data on US5.
Population
8,749
Median household income (avg.)
$68,831
92% of U.S. median
Average home value
$118,122
34% of U.S. median
Average rent
$500
43% of U.S. median
Monona County demographics
Monona County, Iowa covers 9 ZIP codes, with a combined ZIP-area population of about 8,749.
Median household income in Monona County
The average median household income across ZIP codes in Monona County, Iowa is about $68,831 — about 7% below the IA ZIP average ($74,194), and about 8% below the U.S. median ($75,149).
Among ZIPs with income data, 51010 (Castana) is near the top at about $92,083, while 51060 (Ute) is near the bottom at about $49,063.
Housing in Monona County
For housing in Monona County, Iowa, the average median home value is about $118,122 and the average median rent is about $500.
The most populous ZIP is 51040 (Onawa) with about 3,388 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in Monona County
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 |
| 51034 | Mapleton | Monona County | IA | 1,844 | $65,489 | $119,100 |
| 51063 | Whiting | Monona County | IA | 1,109 | $70,714 | $116,400 |
| 51558 | Moorhead | Monona County | IA | 680 | $78,393 | $70,000 |
| 51060 | Ute | Monona County | IA | 529 | $49,063 | $104,200 |
| 51010 | Castana | Monona County | IA | 416 | $92,083 | $107,900 |
| 51572 | Soldier | Monona County | IA | 379 | $70,000 | $125,000 |
| 51523 | Blencoe | Monona County | IA | 356 | $80,909 | $117,600 |
| 51051 | Rodney | Monona County | IA | 48 | $52,188 | $162,500 |
Frequently asked questions
What are the demographics of Monona County?
Monona County, Iowa has a combined ZIP-area population of about 8,749 across 9 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in Monona County?
The average median household income across ZIP codes in Monona County, Iowa is about $68,831, about 7% below the state ZIP average ($74,194), and about 8% below the U.S. median ($75,149). Average median home value is about $118,122. Among ZIPs with data, 51010 (Castana) is near the top ($92,083) and 51060 (Ute) is near the bottom ($49,063).
How many ZIP codes are in Monona County?
Monona County, Iowa includes 9 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Monona County?
This page lists ZIP codes in Monona County, Iowa with population, median household income, and home value. Select a ZIP for a full demographics profile.