Alton, MO Demographics

A map of Alton's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	619	661	83.2%	93.5%
Multiracial	60	26	8.1%	3.7%
Asian	28	0	3.8%	0.0%
Hispanic	26	9	3.5%	1.3%
Black	7	6	0.9%	0.8%
Native American/Other	4	5	0.5%	0.7%

Alton, Missouri has an estimated population of 744, an increase from the 707 recorded in the 2020 Census. The population is 83.2% White, 8.1% Multiracial, 3.8% Asian, 3.5% Hispanic, 0.9% Black, and 0.5% 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 considerably more racially diverse since the 2020 Census. It is considerably less diverse than Missouri 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 12.4% in 2020 and 29.8% in the most recent ACS estimates.

Alton is ranked the 432nd most populous place in Missouri, out of 1,082 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 427th most populous place in the 2020 Census.

Alton's White Population

619 residents of Alton, or 83.2% of the population, identify as White. The share of White residents in Alton is higher than in Missouri overall, where 76.3% of the population is White. Alton ranks 224th statewide in terms of White residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Alton's White population has declined by an estimated 6.4%. White residents' share of Alton's population has decreased from 93.5% to 83.2%.

Alton is more White than neighboring Koshkonong (67.2% White). Alton is less White than neighboring Thomasville (100% White), Thayer (93.1% White), Mammoth Spring (95.7% White), and Brandsville (100% White).

Alton's Black Population

7 residents of Alton, or 0.9% of the population, identify as Black. The share of Black residents in Alton is lower than in Missouri overall, where 10.9% of the population is Black. Alton ranks 448th statewide in terms of Black residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Alton's Black population has grown by an estimated 16.7%. Black residents' share of Alton's population has remained roughly unchanged at 0.9%.

Alton is more Black than neighboring Thomasville (0% Black), Thayer (0% Black), Mammoth Spring (0% Black), Koshkonong (0% Black), and Brandsville (0% Black).

Alton's Asian Population

28 residents of Alton, or 3.8% of the population, identify as Asian. The share of Asian residents in Alton is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Alton ranks 615th statewide in terms of Asian residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Alton's Asian population has grown from 0 to an estimated 28. Asian residents' share of Alton's population has increased from 0.0% to 3.8%.

Alton is more Asian than neighboring Thomasville (0% Asian), Thayer (0% Asian), Mammoth Spring (0% Asian), Koshkonong (0% Asian), and Brandsville (0% Asian).

Alton's Hispanic Population

26 residents of Alton, or 3.5% of the population, identify as Hispanic. The share of Hispanic residents in Alton is comparable to the share in Missouri overall, where 5.2% of the population is Hispanic. Alton ranks 810th statewide in terms of Hispanic residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Alton's Hispanic population has grown by an estimated 188.9%. Hispanic residents' share of Alton's population has increased from 1.3% to 3.5%.

Alton is more Hispanic than neighboring Thomasville (0% Hispanic), Thayer (0.7% Hispanic), Mammoth Spring (0.8% Hispanic), and Brandsville (0% Hispanic). Alton is less Hispanic than neighboring Koshkonong (4% Hispanic).

Alton's Native American/Other Population

4 residents of Alton, or 0.5% 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 Missouri overall, where 0.7% of the population is Native American/Other. Alton ranks 482nd statewide in terms of Native American/Other residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Alton's Native American/Other population has declined by an estimated 20.0%. Native American/Other residents' share of Alton's population has remained roughly unchanged at 0.5%.

Alton is more Native American/Other than neighboring Thomasville (0% Native American/Other), Thayer (0.3% Native American/Other), Mammoth Spring (0% Native American/Other), Koshkonong (0% Native American/Other), and Brandsville (0% Native American/Other).

Alton's Multiracial Population

60 residents of Alton, or 8.1% of the population, identify as Multiracial. The share of Multiracial residents in Alton is slightly higher than in Missouri overall, where 4.8% of the population is Multiracial. Alton ranks 742nd statewide in terms of Multiracial residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Alton's Multiracial population has grown by an estimated 130.8%. Multiracial residents' share of Alton's population has increased from 3.7% to 8.1%.

Alton is more Multiracial than neighboring Thomasville (0% Multiracial), Thayer (5.8% Multiracial), Mammoth Spring (3.5% Multiracial), and Brandsville (0% Multiracial). Alton is less Multiracial than neighboring Koshkonong (28.8% 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.