Duncanville, TX Demographics

A map of Duncanville's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Hispanic	17,591	18,166	44.3%	44.6%
Black	11,631	12,085	29.3%	29.7%
White	8,754	8,729	22.1%	21.4%
Multiracial	905	928	2.3%	2.3%
Asian	521	550	1.3%	1.4%
Native American/Other	281	248	0.7%	0.6%

Duncanville, Texas has an estimated population of 39,683, a slight decrease from the 40,706 recorded in the 2020 Census. The population is 44.3% Hispanic, 29.3% Black, 22.1% White, 2.3% Multiracial, 1.3% Asian, and 0.7% Native American/Other. This demographic dot map shows the population of Duncanville, with one dot drawn for each person counted by the Census, color-coded by race.

Duncanville is about as racially diverse as it was in the 2020 Census. It is about as diverse as Texas overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Duncanville, that probability was 66.6% in 2020 and 66.8% in the most recent ACS estimates.

Duncanville is ranked the 92nd most populous place in Texas, out of 1,863 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Duncanville was ranked the 89th most populous place in the 2020 Census.

Duncanville's White Population

8,754 residents of Duncanville, or 22.1% of the population, identify as White. The share of White residents in Duncanville is significantly lower than in Texas overall, where 39.1% of the population is White. Duncanville ranks 1393rd statewide in terms of White residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Duncanville's White population has remained roughly the same. White residents' share of Duncanville's population has increased from 21.4% to 22.1%.

Duncanville is more White than neighboring DeSoto (8.6% White), Cedar Hill (15.8% White), Cockrell Hill (11% White), and Glenn Heights (15.8% White). Duncanville is less White than neighboring Ovilla (73.3% White).

Duncanville's Black Population

11,631 residents of Duncanville, or 29.3% of the population, identify as Black. The share of Black residents in Duncanville is significantly higher than in Texas overall, where 11.9% of the population is Black. Duncanville ranks 59th statewide in terms of Black residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Duncanville's Black population has declined by an estimated 3.8%. Black residents' share of Duncanville's population has remained roughly unchanged at 29.3%.

Duncanville is more Black than neighboring Cockrell Hill (4.9% Black), and Ovilla (8.7% Black). Duncanville is less Black than neighboring DeSoto (67% Black), Cedar Hill (53.9% Black), and Glenn Heights (51.7% Black).

Duncanville's Asian Population

521 residents of Duncanville, or 1.3% of the population, identify as Asian. The share of Asian residents in Duncanville is slightly lower than in Texas overall, where 5.5% of the population is Asian. Duncanville ranks 355th statewide in terms of Asian residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Duncanville's Asian population has declined by an estimated 5.3%. Asian residents' share of Duncanville's population has remained roughly unchanged at 1.3%.

Duncanville is more Asian than neighboring DeSoto (0.9% Asian), Cockrell Hill (0% Asian), and Glenn Heights (1% Asian). Duncanville is less Asian than neighboring Cedar Hill (1.8% Asian), and Ovilla (4.1% Asian).

Duncanville's Hispanic Population

17,591 residents of Duncanville, or 44.3% of the population, identify as Hispanic. The share of Hispanic residents in Duncanville is slightly higher than in Texas overall, where 39.7% of the population is Hispanic. Duncanville ranks 674th statewide in terms of Hispanic residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Duncanville's Hispanic population has declined by an estimated 3.2%. Hispanic residents' share of Duncanville's population has remained roughly unchanged at 44.3%.

Duncanville is more Hispanic than neighboring DeSoto (18.9% Hispanic), Cedar Hill (24.2% Hispanic), Glenn Heights (30.1% Hispanic), and Ovilla (13.2% Hispanic). Duncanville is less Hispanic than neighboring Cockrell Hill (84.1% Hispanic).

Duncanville's Native American/Other Population

281 residents of Duncanville, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Duncanville is comparable to the share in Texas overall, where 0.6% of the population is Native American/Other. Duncanville ranks 964th statewide in terms of Native American/Other residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Duncanville's Native American/Other population has grown by an estimated 13.3%. Native American/Other residents' share of Duncanville's population has remained roughly unchanged at 0.7%.

Duncanville is more Native American/Other than neighboring Cedar Hill (0.5% Native American/Other), Cockrell Hill (0% Native American/Other), Glenn Heights (0% Native American/Other), and Ovilla (0% Native American/Other). Duncanville is less Native American/Other than neighboring DeSoto (0.8% Native American/Other).

Duncanville's Multiracial Population

905 residents of Duncanville, or 2.3% of the population, identify as Multiracial. The share of Multiracial residents in Duncanville is comparable to the share in Texas overall, where 3.1% of the population is Multiracial. Duncanville ranks 1158th statewide in terms of Multiracial residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Duncanville's Multiracial population has declined by an estimated 2.5%. Multiracial residents' share of Duncanville's population has remained roughly unchanged at 2.3%.

Duncanville is more Multiracial than neighboring Cockrell Hill (0% Multiracial), Glenn Heights (1.4% Multiracial), and Ovilla (0.7% Multiracial). Duncanville is less Multiracial than neighboring DeSoto (3.7% Multiracial), and Cedar Hill (3.7% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.