Residential delivery area · Iowa
ZIP Code 50131: Johnston, IA
ZIP code 50131 is in Johnston, Iowa, entirely in Polk County (Census 2020 ZIP-county file). About 25,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $106,551 (Census Bureau, ACS 2020-2024). By Census place, 71% of its land lies in Johnston, and 2% in smaller places; 27% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Johnston · its only residential ZIP
- County
- Polk County
- Census places
- Johnston
- Metro area
- Des Moines-West Des Moines, IA
- House district
- IA-3 119th Congress
- State
- Iowa
- Time zone
- Central
- Land area
- 23.7 sq mi · 1,038 people per sq mi
Where is ZIP code 50131?
50131 centers on 41.697°, -93.721° and covers 23.7 square miles of land plus 4.2 of water. It borders 7 ZIP codes: 50111, 50322, 50023, 50310, 50313, 50109, 50226.
The map draws ZIP code areas only. For the streets inside 50131, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 50131 compare with the rest of Polk County?
| Measure | 50131 | In Polk County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 24,583 | 10th of 41 | 34th of 970 |
| Median household income | $107k | 9th of 32 | 37th of 396 |
| Median home value | $369k | 6th of 35 | 12th of 423 |
Its median household income is higher than in 85% of U.S. residential ZIP codes, and it is denser than 79% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 50131?
The 2020 Census counted 24,434 people in 50131; the ACS, which samples households over 2020-2024, estimates 24,583. Between the 2010 and 2020 censuses its population grew 39.6% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 24,583
- 2020 Census count
- 24,434+39.6% since 2010 (17,499)
- Households
- 9,361
- Median age
- 37.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 50131?
Of the 24,583 people the ACS estimates in 50131, 30.3% are under 18 and 15.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (76.0%), then Black (not Hispanic) (10.5%).
- Under 1830.3%
- 18 to 6454.1%
- 65 and older15.5%
- White, not Hispanic76.0%
- Black, not Hispanic10.5%
- Asian, not Hispanic7.2%
- Other or two or more3.6%
- Hispanic or Latino2.7%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 50131 earn?
Median household income is $106,551 (ACS 2020-2024), the 9th highest of the 32 ranked ZIP codes in Polk County. It is not measurably different from 2015-2019 ($115,514 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $106,551±$10,768
- Income per person
- $57,553
- Below the poverty line
- 10.1%
- Unemployed (of the labor force)
- 2.1%
- Adults 25+ with a bachelor's degree
- 57.7%
- Adjusted gross income per tax return, 2022
- $130,35711,910 returns; wages 68% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 50131?
FHFA's house price index for 50131, built from repeat sales and appraisals of the same homes, rose 62% from 2015 to 2025 and rose 39% from 2020 to 2025, and moved +3.9% in 2025.
- Median home value (owners' estimate)
- $369,400
- Median gross rent
- $1,338
- Homes owned by their occupants
- 71.1%
- Housing units
- 9,822
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 50131?
671 business establishments had a location in this ZIP code in 2023, 62 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services89
- Health care and social assistance83
- Construction82
- Finance and insurance69
- Accommodation and food services56
- Retail trade54
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 50131?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 50111 | Grimes | 16,865 | $121k | 4.2 mi |
| 50322 | Urbandale | 31,931 | $92k | 4.4 mi |
| 50023 | Ankeny | 46,306 | $118k | 5.1 mi |
| 50310 | Des Moines | 31,177 | $76k | 5.4 mi |
| 50313 | Des Moines | 17,440 | $68k | 5.7 mi |
| 50109 | Granger | 3,309 | $119k | 6.6 mi |
| 50226 | Polk City | 7,759 | $153k | 6.9 mi |
| 50324 | Windsor Heights | 5,143 | $92k | 6.4 mi (near) |
| 50323 | Urbandale | 17,265 | $176k | 6.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.