Allison, IA Demographics

A map of Allison's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	914	936	98.4%	96.9%
Asian	6	1	0.6%	0.1%
Multiracial	5	11	0.5%	1.1%
Black	2	2	0.2%	0.2%
Hispanic	2	13	0.2%	1.3%
Native American/Other	0	3	0.0%	0.3%

Allison, Iowa has an estimated population of 929, a decrease from the 966 recorded in the 2020 Census. The population is 98.4% White, 0.6% Asian, 0.5% Multiracial, 0.2% Black, 0.2% Hispanic, and 0.0% Native American/Other. This demographic dot map shows the population of Allison, with one dot drawn for each person counted by the Census, color-coded by race.

Allison has become less racially diverse since the 2020 Census. It is considerably less 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 Allison, that probability was 6.1% in 2020 and 3.2% in the most recent ACS estimates.

Allison is ranked the 304th 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). Allison was ranked the 288th most populous place in the 2020 Census.

Allison's White Population

914 residents of Allison, or 98.4% of the population, identify as White. The share of White residents in Allison is significantly higher than in Iowa overall, where 82.3% of the population is White. Allison ranks 109th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Allison's White population has declined by an estimated 2.4%. White residents' share of Allison's population has increased from 96.9% to 98.4%.

Allison is more White than neighboring Clarksville (92.4% White), Greene (91.1% White), Dumont (87.6% White), and Parkersburg (93.9% White). Allison is less White than neighboring Bristow (99.5% White).

Allison's Black Population

2 residents of Allison, or 0.2% of the population, identify as Black. The share of Black residents in Allison is slightly lower than in Iowa overall, where 3.8% of the population is Black. Allison ranks 541st statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Allison's Black population has remained roughly the same. Black residents' share of Allison's population has remained roughly unchanged at 0.2%.

Allison is more Black than neighboring Bristow (0% Black), Dumont (0.1% Black), and Parkersburg (0.1% Black). Allison is less Black than neighboring Clarksville (0.5% Black).

Allison's Asian Population

6 residents of Allison, or 0.6% of the population, identify as Asian. The share of Asian residents in Allison is comparable to the share in Iowa overall, where 2.5% of the population is Asian. Allison ranks 521st statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Allison's Asian population has grown by an estimated 500.0%. Asian residents' share of Allison's population has increased from 0.1% to 0.6%.

Allison is more Asian than neighboring Bristow (0% Asian), and Dumont (0% Asian). Allison is less Asian than neighboring Greene (7% Asian), and Parkersburg (2% Asian).

Allison's Hispanic Population

2 residents of Allison, or 0.2% of the population, identify as Hispanic. The share of Hispanic residents in Allison is lower than in Iowa overall, where 7.3% of the population is Hispanic. Allison ranks 763rd statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Allison's Hispanic population has declined by an estimated 84.6%. Hispanic residents' share of Allison's population has decreased from 1.3% to 0.2%.

Allison is more Hispanic than neighboring Bristow (0% Hispanic). Allison is less Hispanic than neighboring Clarksville (1.6% Hispanic), Greene (0.9% Hispanic), Dumont (5.4% Hispanic), and Parkersburg (1.6% Hispanic).

Allison's Native American/Other Population

0 residents of Allison, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Allison is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Allison ranks 475th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Allison's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Allison's population has remained roughly unchanged at 0.0%.

Allison is less Native American/Other than neighboring Greene (0.1% Native American/Other), Dumont (5.5% Native American/Other), and Parkersburg (2.2% Native American/Other).

Allison's Multiracial Population

5 residents of Allison, or 0.5% of the population, identify as Multiracial. The share of Multiracial residents in Allison is slightly lower than in Iowa overall, where 3.5% of the population is Multiracial. Allison ranks 880th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Allison's Multiracial population has declined by an estimated 54.5%. Multiracial residents' share of Allison's population has decreased from 1.1% to 0.5%.

Allison is more Multiracial than neighboring Parkersburg (0.2% Multiracial). Allison is less Multiracial than neighboring Clarksville (4.9% Multiracial), Greene (0.6% Multiracial), and Dumont (1.4% 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.