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Iowa ZIP Codes
Linn County
Marion, IA
52302
52302 ZIP Code — Marion, IA
Linn County, Iowa
ZIP code 52302 is located in
Marion ,
Iowa ,
within Linn County .
It covers approximately 74.34 square miles and serves a population of
42,803 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 319 .
About ZIP code 52302
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 $211,000. Owner-occupancy is high at 78%, well above the national average.
Median household income is $82,242. The poverty rate of 7% is below the national average. 31% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 19 minutes is near the national average.
Educational attainment is near the national average, with 37% of residents holding a bachelor's degree or higher.
Overall, ZIP code 52302 reflects a community defined by high homeownership and a significant Social Security-dependent population.
52302 ZIP code map
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Cities in ZIP code 52302
Below are the cities the US Postal Service accepts for ZIP code 52302. Using any city not on this list may result in mail delivery delays.
Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
42,803
Population density
576 / sq mi
State FIPS
19
County FIPS
113
Geography
Land area
74.34 sq mi
Water area
0.04 sq mi
Latitude
42.0605
Longitude
-91.5833
Timezone
Central (CT)
Area code
319
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
32.6%
36.3%
40.1%
$50k – $100k
32.8%
33.7%
33.4%
$100k – $200k
26.6%
23.6%
21.5%
Over $200k
8.0%
6.4%
5.0%
Demographics & statistics
$82,242
Median household income
$211,000
Median home value
37.4%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 10,551 24.7%
18 and over 32,252 75.3%
65 and over 7,673 17.9%
Median age 39.8 years
Race & ethnicity
Black or African American
2.4%
American Indian / Alaska Native
0.3%
Group Count %
White 38,989 89.3%
Two or more races 1,693 3.9%
Black or African American 1,055 2.4%
Hispanic or Latino 879 2%
Asian 702 1.6%
Other race 194 0.4%
American Indian / Alaska Native 149 0.3%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
32.6%
36.3%
40.1%
$50k – $100k
32.8%
33.7%
33.4%
$100k – $200k
26.6%
23.6%
21.5%
Over $200k
8.0%
6.4%
5.0%
Range % of households
Under $10k 1.7%
$10k–$15k 2.9%
$15k–$25k 6.5%
$25k–$35k 5.4%
$35k–$50k 11.3%
$50k–$75k 16.3%
$75k–$100k 15.1%
$100k–$150k 20.4%
$150k–$200k 10.1%
$200k+ 10.4%
Median income $82,242
Housing
Housing overview
Metric Value
Median home value $211,000
Median rent / month $897
Owner occupied 78.4%
Renter occupied 21.6%
Vacant 4.0%
Single-family detached 66.9%
Large apartment buildings 4.4%
Mobile homes 4.4%
Median rooms 6.4
Avg household size (owned) 2.58
Year built
Era %
2020 or later 1.0%
2010–2019 16.1%
2000–2009 18.2%
1990–1999 14.9%
1980–1989 9.2%
1970–1979 11.0%
1960–1969 11.9%
1950–1959 6.6%
1940–1949 1.8%
1939 or earlier 9.3%
Bedrooms
Size % of units
No bedroom (studio) 1.6%
1 bedroom 6.8%
2 bedrooms 19.9%
3 bedrooms 43.6%
4 bedrooms 20.4%
5+ bedrooms 7.7%
Vehicles per household
Vehicles % of households
No vehicle 3.8%
1 vehicle 30.9%
2 vehicles 43.5%
3 or more 21.9%
Heating fuel
Fuel type %
Utility gas 79.0%
Electricity 16.7%
Propane / LP gas 2.8%
Fuel oil 0.2%
No fuel used 0.5%
Households & families
Household type Count %
Married-couple family 9,194 53.0%
Cohabiting couple 1,159 6.7%
Male householder, no spouse 2,751 15.9%
Female householder, no spouse 4,240 24.4%
Households with children under 18 5,557 32.0%
Households with seniors (65+) 5,149 29.7%
Average household size 2.45
Marital status
Status Male Female
Never married 27.2% 21.9%
Married 59.2% 52.8%
Separated 0.6% 1.5%
Widowed 2.2% 10.4%
Divorced 10.8% 13.5%
Education
Some college, no degree
18.5%
Graduate / professional
10.4%
Metric %
HS diploma or higher 96.8%
Bachelor's or higher 37.4%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 990 9.4%
Kindergarten 419 4.0%
Elementary school 5,151 49.1%
High school 1,966 18.7%
College / grad school 1,967 18.7%
Employment
Industry of employment
Education & healthcare
21.7%
Professional & management
10.6%
Finance & real estate
9.2%
Arts, food & hospitality
7.4%
Transportation & utilities
4.6%
Public administration
3.1%
Agriculture & mining
2.1%
Occupation
Category %
Management, business & arts 44.7%
Service 14.3%
Sales & office 21.8%
Natural resources & construction 5.6%
Production & transportation 13.5%
Employment type
Type %
Private sector 81.2%
Government 11.4%
Self-employed 6.8%
Unpaid family workers 0.6%
Commute
Method %
Drive alone 78.1%
Carpool 5.7%
Public transit 0.6%
Walk 1.0%
Work from home 13.5%
Other means 1.1%
Avg commute (minutes) 19.1
Poverty
Married-couple families
3.2%
Female-led households
26.2%
Income support
Source % of households
Social Security 30.5%
Retirement income 26.5%
Supplemental Security 3.7%
Cash public assistance 1.2%
Food stamps / SNAP 6.7%
Health indicators
Condition %
Obesity 35.9%
High blood pressure 30.1%
High cholesterol 30.8%
Diabetes 8.4%
Heart disease 5.2%
Stroke 2.3%
Asthma 9.3%
Arthritis 22.5%
Kidney disease 2.4%
Pulmonary disease 5.2%
Cancer 6.5%
Behavior / access %
Smoking 13.8%
Binge drinking 22.5%
No physical activity 18.4%
Less than 7 hrs sleep 29.8%
Depression 18.4%
Fair or poor health 10.0%
Poor mental health 13.0%
Poor physical health 7.9%
No health insurance 7.4%
Visited doctor (checkup) 77.2%
Visited dentist 72.4%
Cholesterol screening 89.2%
Teeth loss 9.3%
Veterans & disability
Veterans Count %
Civilian veterans 2,121 6.6%
Disability %
Any disability 11.7%
Under 18 7.5%
18–64 years 8.1%
65 and over 29.5%
Health insurance coverage
Type %
Private insurance 77.2%
Public insurance 33.4%
No insurance 3.2%
Uninsured under 19 2.1%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 39,899 93.2%
Spanish 420 1.1%
Other Indo-European 121 0.3%
Asian & Pacific Islander 176 0.4%
Other languages 95 0.2%
Place of birth & citizenship
Origin Count %
Native born (US) 41,576 97.1%
Born in same state 41,444 96.8%
Born in different state 31,958 74.7%
Foreign born 132 0.3%
Naturalized citizen 1,227 2.9%
Not a US citizen 664 54.1%
Ancestry
Ancestry Count %
Italian 6,100 14.3%
French 5,087 11.9%
Polish 2,871 6.7%
Arab 1,669 3.9%
Ancestry Count %
English 1,105 2.6%
Dutch 693 1.6%
Irish 92 0.2%
German 79 0.2%
Technology access
Metric % of households
Computer access 40.5%
Internet access 95.5%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 52302
What city is ZIP code 52302 in?
ZIP code 52302 is primarily assigned to Marion, Iowa.
What county is ZIP code 52302 in?
ZIP code 52302 falls within Linn County, Iowa.
What is the population of ZIP code 52302?
ZIP code 52302 has an estimated population of 42,803 residents, with a density of 576 people per square mile.
What is the typical home value in ZIP code 52302?
The median home value in ZIP code 52302 is $211,000.
What is the median household income in ZIP code 52302?
The median household income in ZIP code 52302 is $82,242, above the national median of ~$75,000.
What timezone is ZIP code 52302 in?
ZIP code 52302 observes the CST timezone.
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