• county
  • FIPS 26115
  • Largest town: Monroe

Monroe County, Michigan

Monroe County had 156,045 residents in the Census Vintage 2024 estimate, on 549.4 square miles of land. It ranks 15th of 83 in Michigan by population and 60th by land area.

Population
156,045
#15 of 83 in Michigan · #451 in US
Area
549.4 sq mi
#60 of 83 in Michigan · #1,901 in US
Density
284 / sq mi
#12 of 83 in Michigan · #454 in US
Median household income
$73,617
#15 of 83 in Michigan · #751 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Monroe County within Michigan. Pin: Lansing.

Measure from here

Tools and pages that start from Monroe County

Monroe County population, land area and income

Monroe County had 156,045 residents in the Census Vintage 2024 estimate, on 549.4 square miles of land. It ranks 15th of 83 in Michigan by population and 60th by land area. That works out to 284.0 people per square mile, 3.0 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Michigan has 38,041 residents, so Monroe County is 4.1 times that size.

Its SAIPE 2023 median household income of $73,617 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

156,045

3144th1st

451st of 3,144 (US)

Land area

549 sq mi

3144th1st

1901st of 3,144 (US)

Density

284.0 / sq mi

3144th1st

454th of 3,144 (US)

Median household income

$73,617

3143rd1st

751st of 3,143 (US)

Rank within Michigan (83)

Population

156,045

83rd1st

15th of 83 (MI)

Land area

549 sq mi

83rd1st

60th of 83 (MI)

Density

284.0 / sq mi

83rd1st

12th of 83 (MI)

Median household income

$73,617

83rd1st

15th of 83 (MI)

How Monroe County's population changed since 2020

Monroe County gained 1,136 residents between the July 2020 and July 2024 estimates, a rise of 0.7%. That ranks 45th of 83 in Michigan for growth. The median Michigan county changed by +0.9%, and the state as a whole by +0.7%.

Since the April 2020 estimates base, Monroe County recorded 6,024 births and 7,594 deaths, a natural change of -1,570. Net international migration added +779 and net domestic migration, people moving to or from other US counties, came to +2,035. The largest single component was domestic migration, which added 2,035 people.

154.9k2020155.6k2021155.4k2022155.6k2023156.0k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
6,024
Deaths
7,594
Net international migration
+779
Net domestic migration
+2,035
Change, July 2023 to July 2024
+455

Where Monroe County is

The Census internal point of Monroe County is at 41.916100, -83.487100. It sits in UTM zone 17N. The map shades Michigan's 83 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Monroe County outlined. Dots are towns of 1,000+ people with residents in it.

Calhoun County: -0.3%Benzie County: +2.9%Newaygo County: +2.8%Antrim County: +4.6%Montcalm County: +4.0%Kalamazoo County: +1.1%Isabella County: +0.9%Ingham County: +1.9%Jackson County: +0.0%Kent County: +2.2%Oceana County: +1.1%Roscommon County: +2.0%Clare County: +1.8%Gladwin County: +2.5%Branch County: +2.9%Iosco County: +0.7%Bay County: -1.1%Shiawassee County: -0.0%Ionia County: -1.0%Otsego County: +3.8%Alcona County: +4.3%Missaukee County: +1.1%Crawford County: +4.7%Lapeer County: +0.7%Arenac County: +0.5%Gogebic County: -0.9%Marquette County: +2.2%Alpena County: +0.1%Lenawee County: -1.6%Berrien County: -1.1%Leelanau County: +2.5%Clinton County: +1.1%Alger County: -1.6%Gratiot County: -0.8%St. Joseph County: +0.4%Van Buren County: +0.7%Dickinson County: +0.3%Charlevoix County: +0.3%Sanilac County: -0.5%Wexford County: +2.3%Houghton County: +2.1%Saginaw County: -1.1%Kalkaska County: +3.8%Ottawa County: +3.1%Presque Isle County: +1.8%Eaton County: +0.3%Barry County: +2.3%Lake County: +7.5%Cheboygan County: +1.5%Wayne County: -1.0%Macomb County: +0.7%Oscoda County: +4.4%Emmet County: -0.5%Ontonagon County: +0.4%Schoolcraft County: +1.5%Monroe County: +0.7%Tuscola County: -1.0%Luce County: -1.3%Menominee County: -1.7%Mason County: +0.2%Muskegon County: +1.5%Baraga County: +0.3%Genesee County: -0.9%Grand Traverse County: +1.3%Washtenaw County: +0.5%Huron County: -1.9%Cass County: -0.0%Delta County: -0.5%Montmorency County: +7.2%Oakland County: +1.9%Chippewa County: -1.5%Keweenaw County: +5.0%Hillsdale County: -0.3%Manistee County: +1.8%Allegan County: +1.5%Mecosta County: +3.8%Iron County: +0.8%Osceola County: +2.5%St. Clair County: -0.1%Livingston County: +1.5%Ogemaw County: +1.0%Midland County: +0.6%Mackinac County: +3.1%
Change 2020 to 2024
  1. < -0.5%
  2. < +0.5%
  3. < +1.5%
  4. < +2.5%
  5. ≥ +2.5%
no data

Orange pin: Monroe County internal point. Dark pin: Lansing.

Internal point

Decimal
41.916100, -83.487100
DMS
41°54'57.96"N 83°29'13.56"W
UTM
17N 293746.9E 4643452.5N
Geohash
dpkwknwdc
Plus code
86HRWG87+C5

Towns in Monroe County

7 incorporated places of 1,000+ people have residents in Monroe County, 34,845 people together, or 22% of the county. Each figure counts only the part of the town inside Monroe County; towns marked "part" extend into another county. The largest is Monroe with 20,177.

  1. 01Monroe20,177
  2. 02Dundee6,006
  3. 03Carleton2,302
  4. 04Milan (part)2,258
  5. 05South Rockwood1,583
  6. 06Luna Pier1,357
  7. 07Petersburg1,162
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Monroe County

The Census 2024 county adjacency file lists 4 neighbors for Monroe County, including 1 across a state line. The most populous is Wayne County, MI, with 1,771,063 residents. Distances run between Census internal points in a straight line.

Distance to Lansing and the nearest big city

Lansing is 78.5 miles NW of Monroe County's internal point in a straight line. The nearest place of 100,000 or more is Toledo, OH (population 265,638), 18.1 miles away. The nearest place of 10,000 or more is Monroe, MI (population 20,177), 5.3 miles away.

Monroe County FIPS code

The FIPS code of Monroe County is 26115: state code 26 for Michigan plus county code 115. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $73,617.

Questions people ask

What is the population of Monroe County, Michigan?

The Census Vintage 2024 estimate for July 1, 2024 is 156,045. That is up 1,136 people (0.7%) from the July 2020 estimate of 154,909.

What is the FIPS code of Monroe County?

26115. The first two digits (26) are Michigan; the last three (115) identify the county.

What is the largest town in Monroe County?

Monroe, with 20,177 residents inside Monroe County in 2024.

Which counties border Monroe County?

4 county-equivalents border it in the Census 2024 adjacency file: Wayne County, MI; Lucas County, OH; Washtenaw County, MI; Lenawee County, MI.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.