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Iowa ZIP Codes
Jefferson County
Fairfield, IA
52557
52557 ZIP Code — Fairfield, IA
Jefferson County, Iowa
ZIP code 52557 is located in
Fairfield ,
Iowa ,
within Jefferson County .
It covers approximately 0.27 square miles and serves a population of
587 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 641 .
About ZIP code 52557
The housing stock consists of a mix of housing types.
The dominant occupation class is service, with education and healthcare as the leading industry. The average commute of 14 minutes is near the national average. Remote work is prevalent — 23% of workers work from home.
Educational attainment is high — 62% of residents hold a bachelor's degree or higher, well above the national average of 33%.
22% of residents lack health insurance, above the national average.
Notable community characteristics include Spanish spoken in 24% of households.
Overall, ZIP code 52557 reflects a community defined by a highly educated population and a high rate of remote workers.
52557 ZIP code map
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Cities in ZIP code 52557
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Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
587
Population density
2,174 / sq mi
State FIPS
19
County FIPS
101
Geography
Land area
0.27 sq mi
Water area
0.00 sq mi
Latitude
41.0213
Longitude
-91.9633
Timezone
Central (CT)
Area code
641
Demographics & statistics
$0
Median household income
62.1%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 0 0.0% 18 and over 587 100.0% 65 and over 0 0.0% Median age 26.9 years
Race & ethnicity
Black or African American
19.9%
Group Count % White 296 47.6% Black or African American 124 19.9% Asian 79 12.7% Two or more races 71 11.4% Hispanic or Latino 35 5.6% Other race 17 2.7%
Household income
Housing
Home values
Housing overview
Metric Value Median home value $0 Median rent / month $0 Owner occupied 0.0% Renter occupied 0.0% Vacant 0.0% Single-family detached 0.0% Large apartment buildings 0.0% Mobile homes 0.0% Median rooms 0.0 Avg household size (owned) 0.00
Year built
Era % 2020 or later 0.0% 2010–2019 0.0% 2000–2009 0.0% 1990–1999 0.0% 1980–1989 0.0% 1970–1979 0.0% 1960–1969 0.0% 1950–1959 0.0% 1940–1949 0.0% 1939 or earlier 0.0%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 0.0% 2 bedrooms 0.0% 3 bedrooms 0.0% 4 bedrooms 0.0% 5+ bedrooms 0.0%
Vehicles per household
Vehicles % of households No vehicle 0.0% 1 vehicle 0.0% 2 vehicles 0.0% 3 or more 0.0%
Heating fuel
Households & families
Household type Count % Married-couple family 0 0.0% Cohabiting couple 0 0.0% Male householder, no spouse 0 0.0% Female householder, no spouse 0 0.0% Households with children under 18 0 0.0% Households with seniors (65+) 0 0.0% Average household size 0.00
Marital status
Status Male Female Never married 92.2% 100.0% Married 0.8% 0.0% Separated 0.6% 0.0% Widowed 0.0% 0.0% Divorced 6.5% 0.0%
Education
Some college, no degree
37.9%
Graduate / professional
23.4%
Metric % HS diploma or higher 100.0% Bachelor's or higher 62.1%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 0 0.0% Kindergarten 0 0.0% Elementary school 0 0.0% High school 0 0.0% College / grad school 585 100.0%
Employment
Industry of employment
Education & healthcare
76.2%
Arts, food & hospitality
14.0%
Public administration
9.8%
Occupation
Category % Management, business & arts 31.3% Service 44.4% Sales & office 9.8% Natural resources & construction 0.0% Production & transportation 14.5%
Employment type
Type % Private sector 58.9% Government 41.1% Self-employed 0.0% Unpaid family workers 0.0%
Commute
Method % Drive alone 28.5% Carpool 0.0% Public transit 0.5% Walk 47.7% Work from home 23.4% Other means 0.0% Avg commute (minutes) 13.9
Poverty
Married-couple families
0.0%
Female-led households
0.0%
Income support
Source % of households Social Security 0.0% Retirement income 0.0% Supplemental Security 0.0% Cash public assistance 0.0% Food stamps / SNAP 0.0%
Health indicators
Condition % Obesity 29.9% High blood pressure 34.8% High cholesterol 37.0% Diabetes 10.9% Heart disease 6.4% Stroke 2.8% Asthma 7.8% Arthritis 23.2% Kidney disease 2.7% Pulmonary disease 5.9% Cancer 6.8%
Behavior / access % Smoking 12.4% Binge drinking 20.6% No physical activity 19.9% Less than 7 hrs sleep 28.0% Depression 13.8% Fair or poor health 11.0% Poor mental health 10.2% Poor physical health 8.7% No health insurance 6.1% Visited doctor (checkup) 73.4% Visited dentist 73.2% Cholesterol screening 90.3% Teeth loss 7.8%
Veterans & disability
Veterans Count % Civilian veterans 0 0.0%
Disability % Any disability 9.2% Under 18 0.0% 18–64 years 9.2% 65 and over 0.0%
Health insurance coverage
Type % Private insurance 70.0% Public insurance 8.3% No insurance 21.8% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 587 100.0% Spanish 141 24.0% Other Indo-European 1 0.2% Asian & Pacific Islander 17 2.9% Other languages 23 3.9%
Place of birth & citizenship
Origin Count % Native born (US) 262 44.6% Born in same state 262 44.6% Born in different state 59 10.1% Foreign born 0 0.0% Naturalized citizen 325 55.4% Not a US citizen 22 6.8%
Ancestry
Ancestry Count % Italian 27 4.6% French 23 3.9%
Ancestry Count % Arab 20 3.4%
Technology access
Metric % of households Computer access 0.0% Internet access 0.0%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 52557
What city is ZIP code 52557 in?
ZIP code 52557 is primarily assigned to Fairfield, Iowa.
What county is ZIP code 52557 in?
ZIP code 52557 falls within Jefferson County, Iowa.
How educated is the population of ZIP code 52557?
62% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
Is Spanish widely spoken in ZIP code 52557?
Approximately 24% of households in ZIP code 52557 speak Spanish as a primary language.
What is the population of ZIP code 52557?
ZIP code 52557 has an estimated population of 587 residents, with a density of 2,199 people per square mile.
What timezone is ZIP code 52557 in?
ZIP code 52557 observes the CST timezone.
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