52556 ZIP Code — Fairfield, IA

Jefferson County, Iowa

ZIP code 52556 is located in Fairfield, Iowa, within Jefferson County. It covers approximately 175.54 square miles and serves a population of 11,647 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 641.

About ZIP code 52556

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $149,700. Owner-occupancy sits near the national average at 62%.

The gap between median ($49,840) and mean household income suggests income inequality — a small number of higher earners pull the average up. SNAP benefit usage at 19% of households reflects economic stress in the area. 40% 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 14 minutes is near the national average.

Educational attainment is high — 45% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 52556 reflects a community defined by a significant Social Security-dependent population and elevated reliance on food assistance.

11,647

population

175.54

sq mi land

Standard

ZIP type

Central (CT)

timezone

52556 ZIP code map

Cities in ZIP code 52556

Below are the cities the US Postal Service accepts for ZIP code 52556. Using any city not on this list may result in mail delivery delays.

City	Status
Fairfield	Acceptable
Fairfield	Preferred

Nearby ZIP codes

52557 Fairfield (2.2 mi) 52635 Lockridge (8.5 mi) 52567 Libertyville (9.5 mi) 52540 Brighton (10.6 mi) 52580 Packwood (10.8 mi) 52535 Birmingham (11.2 mi) 52533 Batavia (11.4 mi) 52585 Richland (12.3 mi) 52651 Stockport (12.9 mi) 52551 Douds (14.5 mi) 52654 Wayland (15.4 mi) 52576 Ollie (16.5 mi)

Demographics updated 05/2026

Population
Total population	11,647
Population density	66 / sq mi
State FIPS	19
County FIPS	101

Geography
Land area	175.54 sq mi
Water area	0.48 sq mi
Latitude	41.0250
Longitude	-91.9218
Timezone	Central (CT)
Area code	641

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.3%	51.9%	40.1%
$50k – $100k	29.3%	30.3%	33.4%
$100k – $200k	12.4%	13.8%	21.5%
Over $200k	5.0%	4.0%	5.0%

Demographics & statistics

11,647

Population

People per sq mi

45.9

Median age

$49,840

Median household income

$39,470

Per capita income

$149,700

Median home value

$845

Median monthly rent

62.0%

Home ownership

14.7%

Poverty rate

5.5%

Unemployment

4,016

Housing units

45.1%

Bachelor's or higher

Age distribution

Male Female

274

Under 5

248

276

5–9

249

277

10–14

251

250

15–19

226

298

20–24

270

881

25–34

796

726

35–44

656

695

45–54

629

382

55–59

346

372

60–64

336

1,113

65–74

1,006

364

75–84

330

208

85+

188

← Male

Female →

Age summary

Group	Count	%
Under 18	1,897	16.3%
18 and over	9,750	83.7%
65 and over	3,209	27.6%
Median age	45.9 years

Race & ethnicity

White 83.2%

Asian 6.5%

Black or African American 5.4%

Two or more races 2.3%

Hispanic or Latino 1.3%

American Indian / Alaska Native 1.1%

Other race 0.3%

Group	Count	%
White	9,813	83.2%
Asian	767	6.5%
Black or African American	636	5.4%
Two or more races	268	2.3%
Hispanic or Latino	149	1.3%
American Indian / Alaska Native	124	1.1%
Other race	39	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.3%	51.9%	40.1%
$50k – $100k	29.3%	30.3%	33.4%
$100k – $200k	12.4%	13.8%	21.5%
Over $200k	5.0%	4.0%	5.0%

Under $10k 10.7%

$10k–$15k 5.4%

$15k–$25k 8.6%

$25k–$35k 11.1%

$35k–$50k 14.3%

$50k–$75k 15.5%

$75k–$100k 13.9%

$100k–$150k 12.4%

$150k–$200k 3.4%

$200k+ 4.8%

Range	% of households
Under $10k	10.7%
$10k–$15k	5.4%
$15k–$25k	8.6%
$25k–$35k	11.1%
$35k–$50k	14.3%
$50k–$75k	15.5%
$75k–$100k	13.9%
$100k–$150k	12.4%
$150k–$200k	3.4%
$200k+	4.8%
Median income	$49,840

Housing

Home values

Under $50k 15.8%

$50k–$100k 17.0%

$100k–$150k 17.4%

$150k–$200k 17.7%

$200k–$300k 18.1%

$300k–$500k 10.7%

$500k–$1M 3.3%

$1M+ 0.1%

Housing overview

Metric	Value
Median home value	$149,700
Median rent / month	$845
Owner occupied	62.0%
Renter occupied	38.0%
Vacant	12.2%
Single-family detached	65.6%
Large apartment buildings	1.9%
Mobile homes	10.1%
Median rooms	5.5
Avg household size (owned)	2.30

Year built

Era	%
2020 or later	0.0%
2010–2019	4.3%
2000–2009	12.2%
1990–1999	8.7%
1980–1989	9.4%
1970–1979	13.1%
1960–1969	12.3%
1950–1959	6.4%
1940–1949	4.6%
1939 or earlier	29.0%

Bedrooms

Size	% of units
No bedroom (studio)	4.2%
1 bedroom	11.3%
2 bedrooms	36.1%
3 bedrooms	32.4%
4 bedrooms	13.3%
5+ bedrooms	2.7%

Vehicles per household

Vehicles	% of households
No vehicle	9.7%
1 vehicle	39.9%
2 vehicles	33.4%
3 or more	17.0%

Heating fuel

Fuel type	%
Utility gas	55.8%
Electricity	24.2%
Propane / LP gas	16.3%
Fuel oil	0.2%
Wood	1.8%
Solar	0.3%
No fuel used	1.1%

Households & families

Household type	Count	%
Married-couple family	2,094	39.6%
Cohabiting couple	380	7.2%
Male householder, no spouse	1,354	25.6%
Female householder, no spouse	1,464	27.7%
Households with children under 18	1,208	22.8%
Households with seniors (65+)	2,224	42.0%
Average household size	2.13

Marital status

Status	Male	Female
Never married	34.4%	22.7%
Married	41.2%	47.4%
Separated	0.0%	1.6%
Widowed	4.7%	7.8%
Divorced	19.7%	20.6%

Education

Less than 9th grade 2.3%

Some HS, no diploma 2.5%

HS graduate 20.4%

Some college, no degree 18.8%

Associate's degree 10.8%

Bachelor's degree 25.1%

Graduate / professional 19.9%

Metric	%
HS diploma or higher	95.1%
Bachelor's or higher	45.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	98	4.2%
Kindergarten	202	8.6%
Elementary school	793	33.8%
High school	398	17.0%
College / grad school	854	36.4%

Employment

Industry of employment

Education & healthcare 24.3%

Manufacturing 15.4%

Finance & real estate 11.8%

Retail trade 9.8%

Professional & management 9.7%

Construction 7.7%

Arts, food & hospitality 7.3%

Other services 5.1%

Public administration 3.2%

Information 2.0%

Agriculture & mining 1.5%

Transportation & utilities 1.2%

Wholesale trade 1.1%

Occupation

Category	%
Management, business & arts	44.8%
Service	15.7%
Sales & office	14.1%
Natural resources & construction	9.3%
Production & transportation	16.2%

Employment type

Type	%
Private sector	81.8%
Government	10.6%
Self-employed	7.5%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	64.3%
Carpool	8.9%
Public transit	0.1%
Walk	6.4%
Work from home	18.3%
Other means	2.2%
Avg commute (minutes)	14.1

Poverty

All people 14.7%

Under 18 years 9.0%

18 and over 15.9%

Married-couple families 6.6%

Female-led households 7.3%

Income support

Source	% of households
Social Security	40.0%
Retirement income	23.0%
Supplemental Security	7.1%
Cash public assistance	5.1%
Food stamps / SNAP	18.5%

Health indicators

Condition	%
Obesity	31.7%
High blood pressure	33.4%
High cholesterol	34.1%
Diabetes	10.1%
Heart disease	6.7%
Stroke	3.1%
Asthma	8.8%
Arthritis	23.6%
Kidney disease	3.0%
Pulmonary disease	6.9%
Cancer	6.9%

Behavior / access	%
Smoking	16.1%
Binge drinking	19.9%
No physical activity	24.0%
Less than 7 hrs sleep	29.7%
Depression	16.0%
Fair or poor health	13.1%
Poor mental health	12.5%
Poor physical health	9.8%
No health insurance	9.2%
Visited doctor (checkup)	72.5%
Visited dentist	67.9%
Cholesterol screening	87.2%
Teeth loss	13.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	867	8.9%

Disability	%
Any disability	13.3%
Under 18	4.2%
18–64 years	14.4%
65 and over	16.5%

Health insurance coverage

Type	%
Private insurance	58.3%
Public insurance	51.8%
No insurance	6.6%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	11,125	95.5%
Spanish	616	5.5%
Other Indo-European	172	1.5%
Asian & Pacific Islander	94	0.8%
Other languages	254	2.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	10,162	87.2%
Born in same state	10,129	87.0%
Born in different state	5,965	51.2%
Foreign born	33	0.3%
Naturalized citizen	1,485	12.8%
Not a US citizen	413	27.8%

Ancestry

Ancestry	Count	%
French	1,193	10.2%
Italian	1,107	9.5%
Arab	755	6.5%
Polish	323	2.8%

Ancestry	Count	%
English	184	1.6%
Dutch	97	0.8%
German	69	0.6%
Irish	26	0.2%

Technology access

Metric	% of households
Computer access	45.4%
Internet access	94.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 52556

What city is ZIP code 52556 in?

ZIP code 52556 is primarily assigned to Fairfield, Iowa.

What county is ZIP code 52556 in?

ZIP code 52556 falls within Jefferson County, Iowa.

Does ZIP code 52556 have an older population?

28% of residents in ZIP code 52556 are 65 or older, above the national average of ~17%.

Does ZIP code 52556 have a large retiree population?

40% of households in ZIP code 52556 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 52556?

45% 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 52556?

The median home value in ZIP code 52556 is $149,700.

What timezone is ZIP code 52556 in?

ZIP code 52556 observes the CST timezone.