Monroe County, Michigan Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 15th-largest in Michigan
The population of Monroe County, Michigan is 155,001 as of the 2023 American Community Survey, making it the 15th-largest county in Michigan. The median household income is $75,272, the median home value is $215,700, and the median age is 42.6.
The population of Monroe County has grown 2.7% since 2010 (151,936 → 156,045), a +0.19% annualized rate.
155,001
Population
+0.19%
Annual growth
282
People / sq mi
$75,272
Median Income
$215,700
Median Home Value
Monroe County covers 549 sq mi of land at 282.1 people per square mile.
About Monroe County, MI
Homeownership is the standout figure in Monroe County: 81.2% of homes are owner-occupied, higher than the national rate. With 155,001 residents, Monroe County is a county in Michigan. It ranks #15 among counties in Michigan by population.
The typical household earns $75,272 a year, near the US median of $78,538. The poverty rate is 7.7%, below the national 12.4%. Median home value is $215,700, with typical rent around $1,017.
Roughly 23.4% of adults have a bachelor’s, below the national 35.0%. Around 8.2% of workers work from home, below the national 14.0%, and the average commute runs about 27 minutes each way.
The ownership rate anchors the housing story in Monroe County, and tends to move with the age structure and home-value figures above.
Monroe County Population History (2010-2024)
The county of Monroe County had a population of 151,936 in 2010 and 156,045 in 2024, a 2.7% growth over 14 years. The peak was 156,045 in 2024. Average annual growth rate: 0.19%.
156,045
Population (2024)
151,936
Population (2010)
156,045
Peak (2024)
0.19%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 151,936 |
| 2011 | 151,511 |
| 2012 | 150,835 |
| 2013 | 150,193 |
| 2014 | 149,919 |
| 2015 | 149,439 |
| 2016 | 149,278 |
| 2017 | 149,523 |
| 2018 | 150,218 |
| 2019 | 150,412 |
| 2020 | 154,909 |
| 2021 | 155,569 |
| 2022 | 155,412 |
| 2023 | 155,590 |
| 2024 | 156,045 |
Race & Ethnicity
| White | 90.9% |
| Black or African American | 2.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.3% |
| Two or More Races | 0.0% |
Age & Sex
42.6
Median Age
50.1%
Female
49.9%
Male
19.3%
Age 65+
Age Distribution
Children (under 15): 17.1% · Seniors (65+): 19.3%
Income & Poverty
| Median household income | $75,272+$4,123 vs state |
| Mean household income | $96,199 |
| Per-capita income | $39,303 |
| Poverty rate | 7.7%-1.1% vs state |
| Unemployment rate | 3.0% |
| Employment-to-population | 56.6% |
Top Industries by Employment
The largest employment sector in Monroe County is professional & business services, accounting for 23.9% of workers.
How residents commute
0.2%
Drive alone
1.3%
Carpool
82.7%
Public transit
8.2%
Work from home
26.6 min
Avg commute
Housing
$215,700$-1,900 vs state
Median home value
$1,017
Median rent
81.2%
Homeownership rate
66,300
Total housing units
94.3%
Occupied
5.7%
Vacant
18.8%
Renter-occupied
Social & access
96.4%
With health insurance
94.2%
With broadband internet
35.3%
Foreign-born
7.3%
Veterans (18+)
14.7%
With a disability
96.3%
Speak language other than English at home
Education
91.8%
High School+
23.4%
Bachelor's+
Largest cities in Michigan
Other counties in Michigan
Part of Michigan
Metro areas in Michigan
County rankings
Frequently Asked Questions
Monroe County, Michigan has a population of 155,001 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 15th-largest county in Michigan. Population density is 282 people per square mile.
The population of Monroe County has grown 2.7% since 2010 (151,936 → 156,045), a +0.19% annualized rate.
The median household income in Monroe County, Michigan is $75,272, with mean (average) household income of $96,199 and per-capita income of $39,303. 7.7% of residents live below the federal poverty level.
In Monroe County, the largest racial and ethnic groups are White (90.9%), Black or African American (2.2%), Hispanic or Latino (1.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Monroe County, Michigan is 42.6 years. Residents are 50.1% female and 49.9% male.
The median home value in Monroe County is $215,700 and median monthly rent is $1,017. 81.2% of occupied housing units are owner-occupied. The county has 66,300 total housing units, 5.7% of which are vacant.
The largest employment sector in Monroe County, Michigan is professional, scientific, and management services, employing 23.9% of workers. The unemployment rate is 3.0%.
Detroit is among the largest cities associated with Monroe County, Michigan, with a population of 636,644.
Monroe County, MI Climate
Monroe County, MI has an average annual temperature of 9.6°C (49°F) and receives about 857 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.6°C
Avg Temp
857
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -5° / 24° | 46 mm |
| February | -3° / 26° | 45 mm |
| March | 2° / 36° | 66 mm |
| April | 9° / 48° | 78 mm |
| May | 15° / 59° | 80 mm |
| June | 21° / 69° | 91 mm |
| July | 23° / 73° | 82 mm |
| August | 22° / 71° | 85 mm |
| September | 18° / 64° | 83 mm |
| October | 11° / 52° | 60 mm |
| November | 5° / 40° | 73 mm |
| December | -2° / 29° | 68 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Monroe County, MI
The most comfortable months to visit Monroe County, MI are typically August, June and July, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -9°C low). June is usually the wettest month.
Where to stay near Monroe County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.