• county
  • FIPS 18105
  • Largest town: Bloomington

Monroe County, Indiana

Monroe County had 140,702 residents in the Census Vintage 2024 estimate, on 394.5 square miles of land. It ranks 12th of 92 in Indiana by population and 49th by land area.

Population
140,702
#12 of 92 in Indiana · #478 in US
Area
394.5 sq mi
#49 of 92 in Indiana · #2,552 in US
Density
357 / sq mi
#13 of 92 in Indiana · #379 in US
Median household income
$60,553
#74 of 92 in Indiana · #1,788 in US

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

Monroe County within Indiana. Pin: Indianapolis.

Measure from here

Tools and pages that start from Monroe County

Monroe County population, land area and income

Monroe County had 140,702 residents in the Census Vintage 2024 estimate, on 394.5 square miles of land. It ranks 12th of 92 in Indiana by population and 49th by land area. That works out to 356.6 people per square mile, 3.7 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Indiana has 34,874 residents, so Monroe County is 4.0 times that size.

Its SAIPE 2023 median household income of $60,553 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

140,702

3144th1st

478th of 3,144 (US)

Land area

395 sq mi

3144th1st

2552nd of 3,144 (US)

Density

356.6 / sq mi

3144th1st

379th of 3,144 (US)

Median household income

$60,553

3143rd1st

1788th of 3,143 (US)

Rank within Indiana (92)

Population

140,702

92nd1st

12th of 92 (IN)

Land area

395 sq mi

92nd1st

49th of 92 (IN)

Density

356.6 / sq mi

92nd1st

13th of 92 (IN)

Median household income

$60,553

92nd1st

74th of 92 (IN)

How Monroe County's population changed since 2020

Monroe County gained 57 residents between the July 2020 and July 2024 estimates, a rise of 0.0%. That ranks 63rd of 92 in Indiana for growth. The median Indiana county changed by +0.8%, and the state as a whole by +2.0%.

Since the April 2020 estimates base, Monroe County recorded 4,502 births and 4,986 deaths, a natural change of -484. Net international migration added +4,555 and net domestic migration, people moving to or from other US counties, came to -4,320. The largest single component was international migration, which added 4,555 people.

140.6k2020141.2k2021141.2k2022141.1k2023140.7k2024
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
4,502
Deaths
4,986
Net international migration
+4,555
Net domestic migration
-4,320
Change, July 2023 to July 2024
-350

Where Monroe County is

The Census internal point of Monroe County is at 39.160700, -86.523300. It sits in UTM zone 16N. The map shades Indiana's 92 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.

Vigo County: +0.0%Fayette County: -0.1%Grant County: -0.1%Noble County: +0.7%Clay County: -0.0%Fulton County: -2.3%Henry County: +0.3%Jasper County: +1.5%Carroll County: +2.0%Huntington County: +0.8%Howard County: +0.6%Tipton County: -0.4%Starke County: +0.3%Lawrence County: +0.4%Jennings County: +0.2%Jay County: -1.5%Greene County: +1.3%Blackford County: -2.4%Madison County: +3.1%Parke County: +2.1%DeKalb County: +2.4%Scott County: +1.5%Benton County: +1.7%Wells County: +2.3%Wabash County: -0.5%Union County: -2.8%Marshall County: +0.8%Putnam County: +3.1%Clinton County: -0.8%Hamilton County: +8.8%Hancock County: +10.8%Jackson County: +2.0%Hendricks County: +8.5%Johnson County: +5.1%Decatur County: -0.2%Lake County: +0.8%Newton County: +2.5%Fountain County: +2.1%Crawford County: +0.0%Perry County: +0.9%Martin County: +0.6%Dearborn County: +1.3%Morgan County: +2.8%Monroe County: +0.0%Switzerland County: +2.5%Ohio County: +1.2%Sullivan County: -0.2%Franklin County: +1.5%Adams County: +2.0%Jefferson County: -0.5%Knox County: -1.1%Ripley County: +0.8%Vanderburgh County: +0.0%Gibson County: -0.1%LaGrange County: +1.5%Dubois County: -0.0%Harrison County: +0.8%Randolph County: -0.3%Brown County: +1.1%Shelby County: +1.3%Tippecanoe County: +2.8%Daviess County: +2.2%Delaware County: +1.1%Elkhart County: +0.2%Whitley County: +1.6%Allen County: +3.4%Montgomery County: +1.8%Miami County: -0.8%St. Joseph County: +0.4%Kosciusko County: +0.6%Floyd County: +1.8%Rush County: -0.1%Wayne County: -0.2%Posey County: -0.5%Clark County: +5.0%Orange County: -0.1%Marion County: +0.5%Boone County: +10.7%Porter County: +1.5%Steuben County: +1.2%Vermillion County: +0.8%Cass County: -0.6%Owen County: +2.5%White County: +0.6%Washington County: +0.4%Pulaski County: -0.8%Pike County: -1.1%Warren County: +0.3%Warrick County: +3.7%Spencer County: +1.8%LaPorte County: -0.8%Bartholomew County: +3.1%
Change 2020 to 2024
  1. < -0.2%
  2. < +0.4%
  3. < +1.2%
  4. < +2.1%
  5. ≥ +2.1%
no data

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

Internal point

Decimal
39.160700, -86.523300
DMS
39°09'38.52"N 86°31'23.88"W
UTM
16N 541184.9E 4334718.1N
Geohash
dnfqz0gxs
Plus code
86FM5F6G+7M

Towns in Monroe County

2 incorporated places of 1,000+ people have residents in Monroe County, 86,815 people together, or 62% 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 Bloomington with 79,986.

  1. 01Bloomington79,986
  2. 02Ellettsville6,829
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Monroe County

The Census 2024 county adjacency file lists 6 neighbors for Monroe County. The most populous is Morgan County, IN, with 73,825 residents. Distances run between Census internal points in a straight line.

Distance to Indianapolis and the nearest big city

Indianapolis is 46.3 miles NNE of Monroe County's internal point in a straight line. The nearest place of 100,000 or more is Indianapolis, IN (population 891,484), 47.1 miles away. The nearest place of 10,000 or more is Bloomington, IN (population 79,986), 0.2 miles away.

Monroe County FIPS code

The FIPS code of Monroe County is 18105: state code 18 for Indiana plus county code 105. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $60,553.

Questions people ask

What is the population of Monroe County, Indiana?

The Census Vintage 2024 estimate for July 1, 2024 is 140,702. That is up 57 people (0.0%) from the July 2020 estimate of 140,645.

What is the FIPS code of Monroe County?

18105. The first two digits (18) are Indiana; the last three (105) identify the county.

What is the largest town in Monroe County?

Bloomington, with 79,986 residents inside Monroe County in 2024.

Which counties border Monroe County?

6 county-equivalents border it in the Census 2024 adjacency file: Morgan County, IN; Jackson County, IN; Lawrence County, IN; Greene County, IN; Owen County, IN; Brown County, IN.

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.