Where does this demographic data come from?

All demographic data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates, which samples about 3.5 million households annually. The 5-year estimates provide the most reliable data for small geographies like municipalities.

What is the difference between Census data and ACS data?

The decennial Census (conducted every 10 years) is a full population count focusing on basic demographics. The ACS is an ongoing survey that collects detailed data on income, education, housing, commute patterns, and more. ACS data is updated annually but represents averages over a 5-year period.

How accurate is this data for small towns?

For smaller municipalities, ACS estimates have wider margins of error because fewer residents are sampled. The 5-year estimates reduce this uncertainty by averaging over a longer period. For towns under 5,000 people, treat specific numbers as approximations rather than precise counts.

Fairfield, IL Population, Income & Demographics 2026

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

4,561

Median Agei

46.4

Race & Ethnicityi

White

93.5%4,265

Hispanic/Latino

2.6%118

Two or More

2.5%112

Asian

1%47

Black

0.4%19

Educational Attainment (Age 25+)i

GED/Alternative

7.7%265

High School Diploma

31%1,059

Some College (<1 yr)

7.6%259

Some College (1+ yr)

17.7%604

Associate's Degree

12.4%425

Bachelor's Degree

8.4%286

Master's Degree

4.7%162

Professional Degree

1.6%54

Doctorate

0.1%5

HS or Higher

91.2%

BA or Higher

14.8%

Graduate+

6.5%

Housingi

Median Home Valuei

$88,800

Median Renti

$585

Tenure

Owner-Occupied

67.6%1,564

Renter-Occupied

32.4%750

Total Units

2,570

Homeownership

67.6%

Vacancy Rate

10%

Home Values

Under $50K

23.1%361

$50K–$100K

36.5%571

$100K–$150K

21%328

$150K–$200K

9.1%142

$200K–$300K

7%110

$300K–$500K

2.7%43

$500K–$1M

0.6%9

Rent Distribution

Under $500

173

$500–$750

277

$750–$1,000

111

$1,000–$1,250

$1,250–$1,500

$2,000+

Year Built

2010–2019

2.3%58

2000–2009

7.9%202

1990–1999

9.9%255

1980–1989

3.9%101

1970–1979

14.3%368

1960–1969

7%180

1950–1959

23.7%608

1940–1949

18.6%479

1939 or earlier

12.4%319

Heating Fuel

Utility Gas

70%1,620

Electricity

28%648

Bottled/LP Gas

1.5%35

Other

0.4%9

Wood

0.1%2

Economyi

Median Household Incomei

$41,989

Mean Household Incomei

$70,974

Per Capita Incomei

$35,775

Poverty Ratei

17.5%

Unemploymenti

2.6%

Labor Forcei

2,092

Household Income Distribution

Under $10K

7.2%167

$10K–$15K

4.7%108

$15K–$20K

4.9%113

$20K–$25K

11.8%274

$25K–$30K

10.5%244

$30K–$35K

2.3%54

$35K–$40K

5.3%123

$40K–$45K

7%162

$45K–$50K

3.3%77

$50K–$60K

5.7%131

$60K–$75K

8.4%194

$75K–$100K

14.5%335

$100K–$125K

3.7%85

$125K–$150K

2.4%56

$150K–$200K

4.8%111

$200K+

3.5%80

Federally Subsidized Housingi

HUD

The federal government helps low-income families, seniors, and people with disabilities afford housing through several programs. Residents typically pay about 30% of their income toward rent, with the government covering the rest. This data shows how many households in this community receive that assistance.

Subsidized Homesi

240

Residentsi

287

Avg. Tenant Renti

$403/mo

Avg. Waitlisti

42 months

Programs in this community

Public Housing182 homes90% occupied$403/mo rent

Government-owned housing managed by local housing authorities

Housing Choice Vouchers58 homes

Rental vouchers (Section 8) that help tenants pay for private-market housing

Household Incomei

Based on area median of $41,989/yr

Extremely low incomeUnder $13K/yr

65%

Very low income$13K–$21K/yr

20%

Low income$21K–$34K/yr

12%

Moderate / aboveOver $34K/yr

Who Receives This Housing

70% of subsidized households are headed by a single mother

4% of subsidized households are minority

32% of subsidized households include someone with a disability

46% of subsidized households include a senior (62+)

Ancestry & Heritage

Self-reported ancestry groups. Residents may report multiple ancestries, so totals may exceed 100%.

Foreign-Born Populationi

Foreign-Borni

1503.3%

By Region

Top Countries

Canada

Mexico

Germany

Commute & Transportationi

Workersi

2,033

Avg. Commutei

18 min

How People Get to Work

Travel Time to Work

Workforce

Total Employed

2,037

Occupations

Industries

Social Characteristicsi

Marital Status (15+)i

Veteransi

286(7.4% of civilian adults)

Health Insurancei

94.1%Insured

5.9%Uninsured