Alton, IA Demographics

A map of Alton's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	1,268	1,097	86.9%	87.9%
Hispanic	87	81	6.0%	6.5%
Multiracial	58	32	4.0%	2.6%
Black	32	23	2.2%	1.8%
Asian	14	6	1.0%	0.5%
Native American/Other	0	9	0.0%	0.7%

Alton, Iowa has an estimated population of 1,459, a large increase from the 1,248 recorded in the 2020 Census. The population is 86.9% White, 6.0% Hispanic, 4.0% Multiracial, 2.2% Black, 1.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Alton, with one dot drawn for each person counted by the Census, color-coded by race.

Alton has become more 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 Alton, that probability was 22.2% in 2020 and 23.9% in the most recent ACS estimates.

Alton is ranked the 219th 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). Alton was ranked the 241st most populous place in the 2020 Census.

Alton's White Population

1,268 residents of Alton, or 86.9% of the population, identify as White. The share of White residents in Alton is slightly higher than in Iowa overall, where 82.3% of the population is White. Alton ranks 833rd statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Alton's White population has grown by an estimated 15.6%. White residents' share of Alton's population has decreased from 87.9% to 86.9%.

Alton is more White than neighboring Orange City (85.5% White), and Hospers (65.8% White). Alton is less White than neighboring Granville (93.6% White), and Oyens (93.8% White).

Alton's Black Population

32 residents of Alton, or 2.2% of the population, identify as Black. The share of Black residents in Alton is comparable to the share in Iowa overall, where 3.8% of the population is Black. Alton ranks 103rd statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Alton's Black population has grown by an estimated 39.1%. Black residents' share of Alton's population has remained roughly unchanged at 2.2%.

Alton is more Black than neighboring Orange City (1.2% Black), Granville (0% Black), Hospers (0% Black), Maurice (0% Black), and Oyens (0% Black).

Alton's Asian Population

14 residents of Alton, or 1.0% of the population, identify as Asian. The share of Asian residents in Alton is comparable to the share in Iowa overall, where 2.5% of the population is Asian. Alton ranks 297th statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Alton's Asian population has grown by an estimated 133.3%. Asian residents' share of Alton's population has increased from 0.5% to 1.0%.

Alton is more Asian than neighboring Orange City (0.4% Asian), Granville (0% Asian), Hospers (0% Asian), Maurice (0% Asian), and Oyens (0% Asian).

Alton's Hispanic Population

87 residents of Alton, or 6.0% of the population, identify as Hispanic. The share of Hispanic residents in Alton is comparable to the share in Iowa overall, where 7.3% of the population is Hispanic. Alton ranks 158th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Alton's Hispanic population has grown by an estimated 7.4%. Hispanic residents' share of Alton's population has decreased from 6.5% to 6.0%.

Alton is more Hispanic than neighboring Granville (3.4% Hispanic), and Oyens (2.5% Hispanic). Alton is less Hispanic than neighboring Orange City (9.4% Hispanic), Hospers (33.2% Hispanic), and Maurice (13.1% Hispanic).

Alton's Native American/Other Population

0 residents of Alton, 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 Alton is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Alton ranks 211th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Alton's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Alton's population has decreased from 0.7% to 0.0%.

Alton is less Native American/Other than neighboring Orange City (0.7% Native American/Other), and Hospers (1% Native American/Other).

Alton's Multiracial Population

58 residents of Alton, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in Alton is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Alton ranks 547th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Alton's Multiracial population has grown by an estimated 81.3%. Multiracial residents' share of Alton's population has increased from 2.6% to 4.0%.

Alton is more Multiracial than neighboring Orange City (2.7% Multiracial), Granville (3% Multiracial), Hospers (0% Multiracial), Maurice (0% Multiracial), and Oyens (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.