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.

Duncanville, TX Population, Income & Demographics 2026

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

39,683

Median Agei

36.2

Race & Ethnicityi

Hispanic/Latino

44.3%17,591

Black

29.3%11,631

White

22.1%8,754

Two or More

2.3%905

Asian

1.3%521

Other

0.4%171

American Indian/Alaska Native

0.3%110

Educational Attainment (Age 25+)i

GED/Alternative

3.6%899

High School Diploma

23.6%5,910

Some College (<1 yr)

7.5%1,863

Some College (1+ yr)

12.7%3,185

Associate's Degree

8.4%2,107

Bachelor's Degree

16.5%4,125

Master's Degree

7.1%1,787

Professional Degree

0.9%235

Doctorate

0.6%159

HS or Higher

81.1%

BA or Higher

25.2%

Graduate+

8.7%

Housingi

Median Home Valuei

$255,500

Median Renti

$1,630

Tenure

Owner-Occupied

66%8,728

Renter-Occupied

34%4,487

Total Units

14,027

Homeownership

66%

Vacancy Rate

5.8%

Rent Distribution

Under $500

102

$500–$750

$750–$1,000

121

$1,000–$1,250

547

$1,250–$1,500

844

$1,500–$2,000

1,922

$2,000+

749

Year Built

2020 or later

0.1%15

2010–2019

2.2%307

2000–2009

6.7%945

1990–1999

6.2%868

1980–1989

26.8%3,756

1970–1979

32.9%4,613

1960–1969

18.9%2,649

1950–1959

4.2%584

1940–1949

0.8%107

1939 or earlier

1.3%183

Heating Fuel

Electricity

60.5%7,991

Utility Gas

37.9%5,002

Bottled/LP Gas

1%126

No Fuel

0.3%45

Solar

0.2%33

Wood

0.1%18

Economyi

Median Household Incomei

$76,457

Mean Household Incomei

$90,959

Per Capita Incomei

$30,942

Poverty Ratei

10.5%

Unemploymenti

7.1%

Labor Forcei

19,085

Ancestry & Heritage

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

Foreign-Born Populationi

Foreign-Borni

6,47916.3%

By Region

Top Countries

Mexico

4,255

Guatemala

131

Philippines

100

India

United Kingdom

Korea

Canada

Poland

Workforce

Total Employed

17,722

Occupations

Industries

Social Characteristicsi

Veteransi

1,756(6.1% of civilian adults)

Health Insurancei

77.8%Insured

22.2%Uninsured