Allegan County Demographics

A map of Allegan County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	102,766	103,088	84.6%	85.5%
Hispanic	9,856	9,389	8.1%	7.8%
Multiracial	5,679	4,726	4.7%	3.9%
Black	1,439	1,446	1.2%	1.2%
Native American/Other	910	1,014	0.7%	0.8%
Asian	806	839	0.7%	0.7%

Allegan County, Michigan has an estimated population of 121,456, a less than 1% change from the 120,502 recorded in the 2020 Census. The population is 84.6% White, 8.1% Hispanic, 4.7% Multiracial, 1.2% Black, 0.7% Asian, and 0.7% Native American/Other. This demographic dot map shows the population of Allegan County, with one dot drawn for each person counted by the Census, color-coded by race.

Allegan has become more racially diverse since the 2020 Census. It is considerably less diverse than Michigan overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Allegan County, that probability was 26.0% in 2020 and 27.5% in the most recent ACS estimates.

Allegan County is ranked the 18th most populous county in Michigan, out of 83 counties. Allegan County was ranked the 18th most populous county in the 2020 Census.

Allegan County's White Population

102,766 residents of Allegan County, or 84.6% of the population, identify as White. The share of White residents in Allegan County is considerably higher than in Michigan overall, where 72.4% of the population is White. Allegan County ranks 54th statewide in terms of White residents as a share of the population, out of 83 counties.

Since the 2020 Census, Allegan County's White population has remained roughly the same. White residents' share of Allegan County's population has decreased from 85.5% to 84.6%.

Allegan County is more White than neighboring Van Buren County (78.2% White), Ottawa County (81.7% White), Berrien County (72.7% White), Muskegon County (75% White), and Cass County (84% White).

Allegan County's Black Population

1,439 residents of Allegan County, or 1.2% of the population, identify as Black. The share of Black residents in Allegan County is considerably lower than in Michigan overall, where 13.1% of the population is Black. Allegan County ranks 35th statewide in terms of Black residents as a share of the population, out of 83 counties.

Since the 2020 Census, Allegan County's Black population has remained roughly the same. Black residents' share of Allegan County's population has remained roughly unchanged at 1.2%.

Allegan County is less Black than neighboring Van Buren County (3.5% Black), Ottawa County (1.5% Black), Berrien County (13.1% Black), Muskegon County (12% Black), and Cass County (4% Black).

Allegan County's Asian Population

806 residents of Allegan County, or 0.7% of the population, identify as Asian. The share of Asian residents in Allegan County is slightly lower than in Michigan overall, where 3.4% of the population is Asian. Allegan County ranks 22nd statewide in terms of Asian residents as a share of the population, out of 83 counties.

Since the 2020 Census, Allegan County's Asian population has declined by an estimated 3.9%. Asian residents' share of Allegan County's population has remained roughly unchanged at 0.7%.

Allegan County is more Asian than neighboring Van Buren County (0.5% Asian), and Muskegon County (0.6% Asian). Allegan County is less Asian than neighboring Ottawa County (2.7% Asian), Berrien County (1.8% Asian), and Cass County (0.8% Asian).

Allegan County's Hispanic Population

9,856 residents of Allegan County, or 8.1% of the population, identify as Hispanic. The share of Hispanic residents in Allegan County is slightly higher than in Michigan overall, where 5.9% of the population is Hispanic. Allegan County ranks 10th statewide in terms of Hispanic residents as a share of the population, out of 83 counties.

Since the 2020 Census, Allegan County's Hispanic population has grown by an estimated 5.0%. Hispanic residents' share of Allegan County's population has remained roughly unchanged at 8.1%.

Allegan County is more Hispanic than neighboring Berrien County (6.3% Hispanic), Muskegon County (6.3% Hispanic), and Cass County (4.5% Hispanic). Allegan County is less Hispanic than neighboring Van Buren County (12.5% Hispanic), and Ottawa County (10.3% Hispanic).

Allegan County's Native American/Other Population

910 residents of Allegan County, 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 Allegan County is comparable to the share in Michigan overall, where 0.8% of the population is Native American/Other. Allegan County ranks 38th statewide in terms of Native American/Other residents as a share of the population, out of 83 counties.

Since the 2020 Census, Allegan County's Native American/Other population has declined by an estimated 10.3%. Native American/Other residents' share of Allegan County's population has remained roughly unchanged at 0.7%.

Allegan County is more Native American/Other than neighboring Ottawa County (0.5% Native American/Other). Allegan County is less Native American/Other than neighboring Van Buren County (0.8% Native American/Other), Berrien County (0.9% Native American/Other), and Cass County (1.5% Native American/Other).

Allegan County's Multiracial Population

5,679 residents of Allegan County, or 4.7% of the population, identify as Multiracial. The share of Multiracial residents in Allegan County is comparable to the share in Michigan overall, where 4.5% of the population is Multiracial. Allegan County ranks 50th statewide in terms of Multiracial residents as a share of the population, out of 83 counties.

Since the 2020 Census, Allegan County's Multiracial population has grown by an estimated 20.2%. Multiracial residents' share of Allegan County's population has increased from 3.9% to 4.7%.

Allegan County is more Multiracial than neighboring Van Buren County (4.4% Multiracial), and Ottawa County (3.2% Multiracial). Allegan County is less Multiracial than neighboring Berrien County (5.2% Multiracial), Muskegon County (5.6% Multiracial), and Cass County (5.2% 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.