50131 ZIP Code — Johnston, IA
Polk County, Iowa
ZIP code 50131 is located in Johnston, Iowa, within Polk County. It covers approximately 23.69 square miles and serves a population of 23,967 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 515.
About ZIP code 50131
The housing stock consists of a mix of housing types. Most homes were built in the 2000s, giving the area an established character. Median home value is $331,900. Owner-occupancy sits near the national average at 71%.
The gap between median ($97,926) and mean household income suggests income inequality — a small number of higher earners pull the average up.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 18 minutes is near the national average.
Educational attainment is high — 55% of residents hold a bachelor's degree or higher, well above the national average of 33%.
23,967
population
23.69
sq mi land
Standard
ZIP type
Central (CT)
timezone
50131 ZIP code map
Cities in ZIP code 50131
Below are the cities the US Postal Service accepts for ZIP code 50131. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Johnston | Acceptable |
| Johnston | Preferred |
Nearby ZIP codes
50023 Ankeny (3.9 mi)
50111 Grimes (4.6 mi)
50226 Polk City (5.1 mi)
50322 Urbandale (6 mi)
50313 Des Moines (6.4 mi)
50310 Des Moines (6.6 mi)
50109 Granger (6.7 mi)
50323 Urbandale (7.7 mi)
50007 Alleman (7.7 mi)
50021 Ankeny (7.8 mi)
50311 Des Moines (8.1 mi)
50325 Clive (8.2 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 23,967 |
| Population density | 1,012 / sq mi |
| State FIPS | 19 |
| County FIPS | 153 |
| Geography | |
|---|---|
| Land area | 23.69 sq mi |
| Water area | 4.23 sq mi |
| Latitude | 41.7176 |
| Longitude | -93.7117 |
| Timezone | Central (CT) |
| Area code | 515 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 23.6% | 34.3% | 40.1% |
| $50k – $100k | 30.0% | 32.7% | 33.4% |
| $100k – $200k | 31.4% | 25.7% | 21.5% |
| Over $200k | 15.0% | 7.3% | 5.0% |
Demographics & statistics
23,967
Population
1,012
People per sq mi
37.1
Median age
$97,926
Median household income
$53,211
Per capita income
$331,900
Median home value
$1,221
Median monthly rent
71.1%
Home ownership
10.5%
Poverty rate
2.0%
Unemployment
6,962
Housing units
54.6%
Bachelor's or higher
Age distribution
Male
Female
853
Under 5
884
1,052
5–9
1,089
1,092
10–14
1,131
680
15–19
703
566
20–24
586
1,348
25–34
1,395
1,591
35–44
1,648
1,546
45–54
1,600
741
55–59
768
479
60–64
496
1,072
65–74
1,109
503
75–84
520
253
85+
262
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 7,170 | 29.9% |
| 18 and over | 16,797 | 70.1% |
| 65 and over | 3,719 | 15.5% |
| Median age | 37.1 years | |
Race & ethnicity
White
78.3%
Black or African American
10.3%
Asian
5.7%
Two or more races
3.1%
Hispanic or Latino
1.8%
Other race
0.8%
American Indian / Alaska Native
0.1%
| Group | Count | % |
|---|---|---|
| White | 19,103 | 78.3% |
| Black or African American | 2,504 | 10.3% |
| Asian | 1,391 | 5.7% |
| Two or more races | 766 | 3.1% |
| Hispanic or Latino | 435 | 1.8% |
| Other race | 187 | 0.8% |
| American Indian / Alaska Native | 16 | 0.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 23.6% | 34.3% | 40.1% |
| $50k – $100k | 30.0% | 32.7% | 33.4% |
| $100k – $200k | 31.4% | 25.7% | 21.5% |
| Over $200k | 15.0% | 7.3% | 5.0% |
Under $10k
1.8%
$10k–$15k
2.5%
$15k–$25k
3.0%
$25k–$35k
5.8%
$35k–$50k
12.1%
$50k–$75k
12.7%
$75k–$100k
12.8%
$100k–$150k
16.6%
$150k–$200k
11.4%
$200k+
21.2%
| Range | % of households |
|---|---|
| Under $10k | 1.8% |
| $10k–$15k | 2.5% |
| $15k–$25k | 3.0% |
| $25k–$35k | 5.8% |
| $35k–$50k | 12.1% |
| $50k–$75k | 12.7% |
| $75k–$100k | 12.8% |
| $100k–$150k | 16.6% |
| $150k–$200k | 11.4% |
| $200k+ | 21.2% |
| Median income | $97,926 |
Housing
Home values
Under $50k
0.7%
$50k–$100k
1.2%
$100k–$150k
0.6%
$150k–$200k
5.4%
$200k–$300k
33.3%
$300k–$500k
42.0%
$500k–$1M
16.0%
$1M+
0.8%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $331,900 |
| Median rent / month | $1,221 |
| Owner occupied | 71.1% |
| Renter occupied | 28.9% |
| Vacant | 3.4% |
| Single-family detached | 59.4% |
| Large apartment buildings | 13.5% |
| Mobile homes | 0.0% |
| Median rooms | 6.5 |
| Avg household size (owned) | 2.67 |
Year built
| Era | % |
|---|---|
| 2020 or later | 1.9% |
| 2010–2019 | 25.1% |
| 2000–2009 | 32.5% |
| 1990–1999 | 19.3% |
| 1980–1989 | 11.3% |
| 1970–1979 | 3.2% |
| 1960–1969 | 3.5% |
| 1950–1959 | 1.2% |
| 1940–1949 | 0.7% |
| 1939 or earlier | 1.3% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.6% |
| 1 bedroom | 8.5% |
| 2 bedrooms | 21.4% |
| 3 bedrooms | 30.1% |
| 4 bedrooms | 25.1% |
| 5+ bedrooms | 13.4% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 2.9% |
| 1 vehicle | 28.7% |
| 2 vehicles | 48.1% |
| 3 or more | 20.2% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 69.2% |
| Electricity | 28.7% |
| Propane / LP gas | 0.9% |
| Wood | 0.2% |
| No fuel used | 0.7% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 5,230 | 56.0% |
| Cohabiting couple | 317 | 3.4% |
| Male householder, no spouse | 1,305 | 14.0% |
| Female householder, no spouse | 2,486 | 26.6% |
| Households with children under 18 | 3,466 | 37.1% |
| Households with seniors (65+) | 2,467 | 26.4% |
| Average household size | 2.54 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 25.7% | 24.6% |
| Married | 66.9% | 55.4% |
| Separated | 0.6% | 1.3% |
| Widowed | 2.0% | 7.6% |
| Divorced | 4.8% | 11.1% |
Education
Less than 9th grade
0.5%
Some HS, no diploma
2.8%
HS graduate
16.3%
Some college, no degree
15.7%
Associate's degree
9.9%
Bachelor's degree
34.1%
Graduate / professional
20.5%
| Metric | % |
|---|---|
| HS diploma or higher | 96.6% |
| Bachelor's or higher | 54.6% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 478 | 6.8% |
| Kindergarten | 361 | 5.1% |
| Elementary school | 3,510 | 49.7% |
| High school | 1,444 | 20.5% |
| College / grad school | 1,268 | 18.0% |
Employment
Industry of employment
Education & healthcare
27.5%
Finance & real estate
19.1%
Professional & management
11.1%
Manufacturing
8.8%
Retail trade
5.8%
Arts, food & hospitality
5.1%
Public administration
4.3%
Transportation & utilities
4.2%
Construction
3.5%
Other services
3.5%
Wholesale trade
3.1%
Agriculture & mining
2.0%
Information
2.0%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 59.7% |
| Service | 11.4% |
| Sales & office | 17.4% |
| Natural resources & construction | 6.3% |
| Production & transportation | 5.2% |
Employment type
| Type | % |
|---|---|
| Private sector | 81.1% |
| Government | 13.9% |
| Self-employed | 5.0% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 81.6% |
| Carpool | 4.3% |
| Public transit | 0.1% |
| Walk | 1.0% |
| Work from home | 12.3% |
| Other means | 0.5% |
| Avg commute (minutes) | 18.3 |
Poverty
All people
10.5%
Under 18 years
20.5%
18 and over
6.2%
Married-couple families
3.2%
Female-led households
28.3%
Income support
| Source | % of households |
|---|---|
| Social Security | 23.2% |
| Retirement income | 25.0% |
| Supplemental Security | 2.6% |
| Cash public assistance | 0.5% |
| Food stamps / SNAP | 6.0% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 31.7% |
| High blood pressure | 25.3% |
| High cholesterol | 30.4% |
| Diabetes | 7.1% |
| Heart disease | 4.3% |
| Stroke | 1.9% |
| Asthma | 8.1% |
| Arthritis | 18.7% |
| Kidney disease | 2.0% |
| Pulmonary disease | 3.9% |
| Cancer | 5.9% |
| Behavior / access | % |
|---|---|
| Smoking | 12.3% |
| Binge drinking | 24.8% |
| No physical activity | 15.6% |
| Less than 7 hrs sleep | 26.6% |
| Depression | 16.9% |
| Fair or poor health | 8.4% |
| Poor mental health | 12.0% |
| Poor physical health | 6.5% |
| No health insurance | 6.3% |
| Visited doctor (checkup) | 74.7% |
| Visited dentist | 76.7% |
| Cholesterol screening | 90.8% |
| Teeth loss | 7.6% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 865 | 5.2% |
| Disability | % |
|---|---|
| Any disability | 6.8% |
| Under 18 | 2.3% |
| 18–64 years | 4.4% |
| 65 and over | 24.7% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 83.5% |
| Public insurance | 27.4% |
| No insurance | 2.5% |
| Uninsured under 19 | 2.7% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 22,230 | 92.8% |
| Spanish | 782 | 3.5% |
| Other Indo-European | 95 | 0.4% |
| Asian & Pacific Islander | 220 | 1.0% |
| Other languages | 153 | 0.7% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 21,935 | 91.5% |
| Born in same state | 21,786 | 90.9% |
| Born in different state | 15,388 | 64.2% |
| Foreign born | 149 | 0.6% |
| Naturalized citizen | 2,032 | 8.5% |
| Not a US citizen | 1,004 | 49.4% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 3,161 | 13.2% |
| French | 2,268 | 9.5% |
| Polish | 1,601 | 6.7% |
| Arab | 721 | 3% |
| Ancestry | Count | % |
|---|---|---|
| English | 411 | 1.7% |
| Dutch | 346 | 1.4% |
| Irish | 28 | 0.1% |
| German | 9 | 0% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 39.0% |
| Internet access | 96.4% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 50131
What city is ZIP code 50131 in?
ZIP code 50131 is primarily assigned to Johnston, Iowa.
What county is ZIP code 50131 in?
ZIP code 50131 falls within Polk County, Iowa.
How educated is the population of ZIP code 50131?
55% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What is the typical home value in ZIP code 50131?
The median home value in ZIP code 50131 is $331,900.
What is the population of ZIP code 50131?
ZIP code 50131 has an estimated population of 23,967 residents, with a density of 1,012 people per square mile.
What is the median household income in ZIP code 50131?
The median household income in ZIP code 50131 is $97,926, above the national median of ~$75,000.
What timezone is ZIP code 50131 in?
ZIP code 50131 observes the CST timezone.