Monroe County Demographics

A map of Monroe County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	137,566	135,369	88.5%	87.4%
Hispanic	6,830	6,231	4.4%	4.0%
Multiracial	6,427	7,293	4.1%	4.7%
Black	3,349	4,036	2.2%	2.6%
Native American/Other	750	928	0.5%	0.6%
Asian	583	952	0.4%	0.6%

Monroe County, Michigan has an estimated population of 155,505, a less than 1% change from the 154,809 recorded in the 2020 Census. The population is 88.5% White, 4.4% Hispanic, 4.1% Multiracial, 2.2% Black, 0.5% Native American/Other, and 0.4% Asian. This demographic dot map shows the population of Monroe County, with one dot drawn for each person counted by the Census, color-coded by race.

Monroe has become less 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 Monroe County, that probability was 23.1% in 2020 and 21.3% in the most recent ACS estimates.

Monroe County is ranked the 15th most populous county in Michigan, out of 83 counties. Monroe County was ranked the 15th most populous county in the 2020 Census.

Monroe County's White Population

137,566 residents of Monroe County, or 88.5% of the population, identify as White. The share of White residents in Monroe County is significantly higher than in Michigan overall, where 72.4% of the population is White. Monroe County ranks 48th statewide in terms of White residents as a share of the population, out of 83 counties.

Since the 2020 Census, Monroe County's White population has grown by an estimated 1.6%. White residents' share of Monroe County's population has increased from 87.4% to 88.5%.

Monroe County is more White than neighboring Lucas County (66.1% White), Wayne County (47.9% White), Washtenaw County (67.2% White), Lenawee County (84.8% White), and Wood County (85.5% White).

Monroe County's Black Population

3,349 residents of Monroe County, or 2.2% of the population, identify as Black. The share of Black residents in Monroe County is considerably lower than in Michigan overall, where 13.1% of the population is Black. Monroe County ranks 25th statewide in terms of Black residents as a share of the population, out of 83 counties.

Since the 2020 Census, Monroe County's Black population has declined by an estimated 17.0%. Black residents' share of Monroe County's population has remained roughly unchanged at 2.2%.

Monroe County is more Black than neighboring Wood County (2.1% Black). Monroe County is less Black than neighboring Lucas County (18.9% Black), Wayne County (36.6% Black), Washtenaw County (11.3% Black), and Lenawee County (2.3% Black).

Monroe County's Asian Population

583 residents of Monroe County, or 0.4% of the population, identify as Asian. The share of Asian residents in Monroe County is slightly lower than in Michigan overall, where 3.4% of the population is Asian. Monroe County ranks 24th statewide in terms of Asian residents as a share of the population, out of 83 counties.

Since the 2020 Census, Monroe County's Asian population has declined by an estimated 38.8%. Asian residents' share of Monroe County's population has remained roughly unchanged at 0.4%.

Monroe County is more Asian than neighboring Lenawee County (0.3% Asian). Monroe County is less Asian than neighboring Lucas County (1.7% Asian), Wayne County (3.7% Asian), Washtenaw County (9.2% Asian), and Wood County (2.1% Asian).

Monroe County's Hispanic Population

6,830 residents of Monroe County, or 4.4% of the population, identify as Hispanic. The share of Hispanic residents in Monroe County is comparable to the share in Michigan overall, where 5.9% of the population is Hispanic. Monroe County ranks 32nd statewide in terms of Hispanic residents as a share of the population, out of 83 counties.

Since the 2020 Census, Monroe County's Hispanic population has grown by an estimated 9.6%. Hispanic residents' share of Monroe County's population has remained roughly unchanged at 4.4%.

Monroe County is less Hispanic than neighboring Lucas County (7.8% Hispanic), Wayne County (6.9% Hispanic), Washtenaw County (5.8% Hispanic), Lenawee County (8.9% Hispanic), and Wood County (6.6% Hispanic).

Monroe County's Native American/Other Population

750 residents of Monroe County, 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 Monroe County is comparable to the share in Michigan overall, where 0.8% of the population is Native American/Other. Monroe County ranks 70th statewide in terms of Native American/Other residents as a share of the population, out of 83 counties.

Since the 2020 Census, Monroe County's Native American/Other population has declined by an estimated 19.2%. Native American/Other residents' share of Monroe County's population has remained roughly unchanged at 0.5%.

Monroe County is more Native American/Other than neighboring Lenawee County (0.4% Native American/Other), and Wood County (0.4% Native American/Other). Monroe County is less Native American/Other than neighboring Wayne County (0.7% Native American/Other), and Washtenaw County (0.7% Native American/Other).

Monroe County's Multiracial Population

6,427 residents of Monroe County, or 4.1% of the population, identify as Multiracial. The share of Multiracial residents in Monroe County is comparable to the share in Michigan overall, where 4.5% of the population is Multiracial. Monroe County ranks 22nd statewide in terms of Multiracial residents as a share of the population, out of 83 counties.

Since the 2020 Census, Monroe County's Multiracial population has declined by an estimated 11.9%. Multiracial residents' share of Monroe County's population has decreased from 4.7% to 4.1%.

Monroe County is more Multiracial than neighboring Lenawee County (3.3% Multiracial), and Wood County (3.4% Multiracial). Monroe County is less Multiracial than neighboring Lucas County (4.9% Multiracial), Wayne County (4.3% Multiracial), and Washtenaw County (5.8% 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.