Denison, IA Demographics

A map of Denison's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Hispanic	4,029	4,153	48.8%	49.6%
White	3,540	3,456	42.9%	41.3%
Multiracial	285	114	3.5%	1.4%
Asian	274	269	3.3%	3.2%
Black	123	342	1.5%	4.1%
Native American/Other	9	39	0.1%	0.5%

Denison, Iowa has an estimated population of 8,260, a slight decrease from the 8,373 recorded in the 2020 Census. The population is 48.8% Hispanic, 42.9% White, 3.5% Multiracial, 3.3% Asian, 1.5% Black, and 0.1% Native American/Other. This demographic dot map shows the population of Denison, with one dot drawn for each person counted by the Census, color-coded by race.

Denison is about as racially diverse as it was in the 2020 Census. It is considerably more diverse than Iowa overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Denison, that probability was 58.1% in 2020 and 57.6% in the most recent ACS estimates.

Denison is ranked the 49th most populous place in Iowa, out of 1,026 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). Denison was ranked the 47th most populous place in the 2020 Census.

Denison's White Population

3,540 residents of Denison, or 42.9% of the population, identify as White. The share of White residents in Denison is significantly lower than in Iowa overall, where 82.3% of the population is White. Denison ranks 1024th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Denison's White population has grown by an estimated 2.4%. White residents' share of Denison's population has increased from 41.3% to 42.9%.

Denison is less White than neighboring Deloit (59.2% White), Buck Grove (95.2% White), Arion (95.6% White), Vail (50.5% White), and Schleswig (63.7% White).

Denison's Black Population

123 residents of Denison, or 1.5% of the population, identify as Black. The share of Black residents in Denison is slightly lower than in Iowa overall, where 3.8% of the population is Black. Denison ranks 43rd statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Denison's Black population has declined by an estimated 64.0%. Black residents' share of Denison's population has decreased from 4.1% to 1.5%.

Denison is more Black than neighboring Deloit (0% Black), Buck Grove (0% Black), Arion (0% Black), Vail (0% Black), and Schleswig (1.1% Black).

Denison's Asian Population

274 residents of Denison, or 3.3% of the population, identify as Asian. The share of Asian residents in Denison is comparable to the share in Iowa overall, where 2.5% of the population is Asian. Denison ranks 38th statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Denison's Asian population has grown by an estimated 1.9%. Asian residents' share of Denison's population has remained roughly unchanged at 3.3%.

Denison is more Asian than neighboring Deloit (0% Asian), Buck Grove (0% Asian), Arion (0% Asian), and Vail (0% Asian). Denison is less Asian than neighboring Schleswig (4.2% Asian).

Denison's Hispanic Population

4,029 residents of Denison, or 48.8% of the population, identify as Hispanic. The share of Hispanic residents in Denison is significantly higher than in Iowa overall, where 7.3% of the population is Hispanic. Denison ranks 4th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Denison's Hispanic population has declined by an estimated 3.0%. Hispanic residents' share of Denison's population has decreased from 49.6% to 48.8%.

Denison is more Hispanic than neighboring Deloit (40.8% Hispanic), Buck Grove (0% Hispanic), Arion (2.9% Hispanic), Vail (42.3% Hispanic), and Schleswig (28.9% Hispanic).

Denison's Native American/Other Population

9 residents of Denison, or 0.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Denison is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Denison ranks 362nd statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Denison's Native American/Other population has declined by an estimated 76.9%. Native American/Other residents' share of Denison's population has remained roughly unchanged at 0.1%.

Denison is more Native American/Other than neighboring Deloit (0% Native American/Other), Arion (0% Native American/Other), Vail (0% Native American/Other), and Schleswig (0% Native American/Other). Denison is less Native American/Other than neighboring Buck Grove (4.8% Native American/Other).

Denison's Multiracial Population

285 residents of Denison, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in Denison is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Denison ranks 847th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Denison's Multiracial population has grown by an estimated 150.0%. Multiracial residents' share of Denison's population has increased from 1.4% to 3.5%.

Denison is more Multiracial than neighboring Deloit (0% Multiracial), Buck Grove (0% Multiracial), Arion (1.5% Multiracial), and Schleswig (2.2% Multiracial). Denison is less Multiracial than neighboring Vail (7.2% 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.