ZIP codes
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Johnston, IA Demographics & ZIP Codes
Johnston, Iowa demographics and median household income by ZIP code (in Polk County) — 1 ZIP codes — population 24,388 — median income $103,316 — avg. home value $347,100. Compare income, housing, and population across ZIP codes on US5.
Population
24,388
Median household income (avg.)
$103,316
137% of U.S. median
Average home value
$347,100
100% of U.S. median
Average rent
$1,155
99% of U.S. median
Median age (avg.)
38.5
Johnston demographics
Johnston, Iowa covers 1 ZIP code primarily in Polk County, with a combined ZIP-area population of about 24,388.
Across ZIP codes with age data, the average median age is about 38.5 years.
Median household income in Johnston
The average median household income across ZIP codes in Johnston, Iowa is about $103,316 — about 39% above the IA ZIP average ($74,194), and about 37% above the U.S. median ($75,149).
The highest median household income among listed ZIPs is about $103,316 in 50131.
Housing in Johnston
For housing in Johnston, Iowa, the average median home value is about $347,100 and the average median rent is about $1,155.
The most populous ZIP in this set is 50131 (about 24,388 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in Johnston
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 50131 | Johnston | Polk County | IA | 24,388 | $103,316 | $347,100 |
Frequently asked questions
What are the demographics of Johnston?
Johnston, Iowa has a combined ZIP-area population of about 24,388 across 1 ZIP codes (primarily Polk County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in Johnston?
The average median household income across ZIP codes in Johnston, Iowa is about $103,316, about 39% above the state ZIP average ($74,194), and about 37% above the U.S. median ($75,149). Average median home value is about $347,100.
How many ZIP codes are in Johnston?
Johnston, 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 Johnston?
This page lists ZIP codes in Johnston, Iowa with population, median household income, and home value. Select a ZIP for a full demographics profile.