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.

Sullivan, MO Population, Income & Demographics 2026

Showing latest census year. Full demographic history available with a paid plan. View plans →

Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

6,310

Median Agei

39.4

Race & Ethnicityi

White

87.7%5,532

Two or More

9.9%626

Black

1.5%95

Hispanic/Latino

0.8%50

American Indian/Alaska Native

0.1%7

Educational Attainment (Age 25+)i

GED/Alternative

5.4%236

High School Diploma

31.3%1,371

Some College (<1 yr)

10.4%458

Some College (1+ yr)

18.4%808

Associate's Degree

7.1%313

Bachelor's Degree

10.7%469

Master's Degree

6.1%267

Professional Degree

1.7%76

Doctorate

0.3%15

HS or Higher

91.5%

BA or Higher

18.9%

Graduate+

8.2%

Housingi

Median Home Valuei

$163,200

Median Renti

$919

Tenure

Owner-Occupied

62.4%1,699

Renter-Occupied

37.6%1,023

Total Units

2,920

Homeownership

62.4%

Vacancy Rate

6.8%

Home Values

Under $50K

3.4%58

$50K–$100K

11%187

$100K–$150K

22.2%377

$150K–$200K

37.7%640

$200K–$300K

16.6%282

$300K–$500K

8.5%145

$500K–$1M

0.6%10

Rent Distribution

Under $500

$500–$750

165

$750–$1,000

428

$1,000–$1,250

286

$1,250–$1,500

$2,000+

Year Built

2020 or later

1.6%46

2010–2019

6%174

2000–2009

11.1%323

1990–1999

15%439

1980–1989

7.9%231

1970–1979

20.9%609

1960–1969

12%351

1950–1959

8.6%250

1940–1949

12.1%353

1939 or earlier

4.9%144

Heating Fuel

Electricity

53.7%1,461

Utility Gas

36.5%994

Bottled/LP Gas

9.5%259

Other

0.3%8

Economyi

Median Household Incomei

$63,370

Mean Household Incomei

$76,320

Per Capita Incomei

$32,875

Poverty Ratei

11.2%

Unemploymenti

5.9%

Labor Forcei

3,132

Household Income Distribution

Under $10K

3.1%85

$10K–$15K

1.4%38

$15K–$20K

3%81

$20K–$25K

4.6%124

$25K–$30K

4.4%121

$30K–$35K

4.2%113

$35K–$40K

4.7%127

$40K–$45K

6.9%188

$45K–$50K

6.2%170

$50K–$60K

5.8%159

$60K–$75K

14.8%403

$75K–$100K

15%408

$100K–$125K

11.7%318

$125K–$150K

7.1%194

$150K–$200K

5.2%141

$200K+

1.9%52

Ancestry & Heritage

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

Foreign-Born Populationi

Foreign-Borni

90.1%

By Region

Social Characteristicsi

Marital Status (15+)i

Veteransi

276(5.8% of civilian adults)

Health Insurancei

88.7%Insured

11.3%Uninsured