Zip Code 50131
Johnston, Iowa — Polk County
📍 ZIP code 50131 is in Johnston, Polk County, Iowa.
ZIP code 50131 is located in Johnston, Polk County, Iowa. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 24,388. The area code for ZIP code 50131 is 515.
Quick Answer
Zip code 50131 is in Johnston, Iowa (Polk County). It has a population of 24,388, median household income of $103,316, and median home value of $347,100.
Population
24,388
Income
$103,316
Home Value
$347,100
Climate
85°F / 13°F
About Zip Code 50131
Zip code 50131 is located in Johnston, Iowa, within Polk County. Home to approximately 24,388 residents, this area sits at an elevation of 833 ft and falls within the Central (CST/CDT) timezone. The local area code is 515.
The median household income is $103,316 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $347,100, and the cost of living index is 123 (23% above the national average of 100).
Summers average a high of 85°F while winters drop to 13°F. The area receives about 36 in of rain and 38 in of snow annually. The zip code covers 21.5 square miles of land area and 3.5 square miles of water.
Key Statistics
24,388
$103,316
$347,100
Central (CST/CDT)
515
833 ft
21.5 sq mi
38.5
9,975
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Compare With Nearby Zip Codes
| Metric | 50131 | 50322 | 50111 | 50310 | 50313 | 50323 |
|---|---|---|---|---|---|---|
| City | Johnston, IA | Urbandale, IA | Grimes, IA | Des Moines, IA | Des Moines, IA | Urbandale, IA |
| Population | 24,388 | 31,694 | 16,254 | 31,283 | 18,280 | 17,065 |
| Median Income | $103,316 | $89,323 | $108,352 | $74,473 | $64,077 | $173,659 |
| Home Value | $347,100 | $263,900 | $285,700 | $213,800 | $161,800 | $456,600 |
| Cost of Living | 123 | 98 | 114 | 81 | 64 | 175 |
| Median Age | 38.5 | 40.1 | 34.8 | 37.6 | 37.6 | 36.5 |
Cost of Living
100 = National Average. Johnston's cost of living is 23% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
3.4x
Demographics
Zip code 50131 has a population of 24,388 people with a median age of 38.5. There are 9,975 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Johnston (50131) population trend from 2010 to 2024
↑ 25.6%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
85°F
13°F
36 in
38 in
Johnston experiences warm summers with average highs around 85°F. Winters are cold with lows averaging 13°F. With 38 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$347,100
Median Household Income
$103,316
With 9,975 housing units across 21.5 square miles, 50131 has a housing density of 464 units per square mile. The home price-to-income ratio is 3.4x.
Location & Geography
Latitude
41.6921°
Longitude
-93.7152°
Land Area
21.5 sq mi
Water Area
3.5 sq mi
Nearby Zip Codes
Zip codes closest to 50131 (Johnston, IA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 50131's $103,316. A way to compare Johnston to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 50131 (Johnston, IA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Johnston, Iowa?
Johnston, Iowa uses zip code 50131.
What county is zip code 50131 in?
Zip code 50131 is located in Polk County, Iowa.
What is the population of zip code 50131?
The population of zip code 50131 is 24,388 with a median age of 38.5.
Is 50131 in Johnston, Iowa?
Yes, zip code 50131 is in Johnston, Polk County, Iowa. The area code is 515.
Frequently Asked Questions
What city is zip code 50131 in?
Zip code 50131 is in Johnston, Iowa. It is part of Polk County and uses the Central (CST/CDT) timezone.
What is zip code 50131?
Zip code 50131 is a U.S. postal code in Johnston, Iowa (Polk County). It has a population of 24,388 and covers 21.5 square miles.
What is the population of zip code 50131?
The population of zip code 50131 (Johnston, IA) is 24,388 with a median age of 38.5. There are approximately 9,975 housing units in this area.
What is the median income in zip code 50131?
The median household income in zip code 50131 (Johnston, IA) is $103,316 per year. The cost of living index is 123 (100 = national average).
What is the average home price in zip code 50131?
The median home value in zip code 50131 (Johnston, IA) is $347,100. The cost of living index is 123 compared to the national average of 100.
What county is zip code 50131 in?
Zip code 50131 is located in Polk County, Iowa. The primary city is Johnston.
What is the area code for zip code 50131?
Zip code 50131 in Johnston, IA uses area code 515. It is located in the Central (CST/CDT) timezone.
Is zip code 50131 a good place to live?
Zip code 50131 (Johnston, IA) has a cost of living index of 123 (100 = national average), a median household income of $103,316, and median home values of $347,100. The median age is 38.5. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 50131?
The cost of living index for zip code 50131 (Johnston, IA) is 123, where 100 represents the national average. This area is above the national average. Median home value: $347,100.
What schools serve zip code 50131?
Zip code 50131 in Johnston, Iowa is served by the local school district of Polk County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.