Monroe County, Indiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 12th-largest in Indiana
The population of Monroe County, Indiana is 139,822 as of the 2023 American Community Survey, making it the 12th-largest county in Indiana. The median household income is $63,372, the median home value is $261,700, and the median age is 31.4.
The population of Monroe County has grown 1.5% since 2010 (138,574 → 140,702), a +0.11% annualized rate.
139,822
Population
+0.11%
Annual growth
354
People / sq mi
$63,372
Median Income
$261,700
Median Home Value
Monroe County covers 395 sq mi of land at 354.4 people per square mile.
About Monroe County, IN
Age is the most distinctive thing about Monroe County: a median age of 31.4, younger than the national median. With 139,822 residents, Monroe County is a county in Indiana. It ranks #12 among counties in Indiana by population.
Median household income is $63,372, below the US median of $78,538. Poverty runs at 8.8%, below the national 12.4%. A typical home is worth $261,700, with typical rent around $1,151.
Monroe County is among the best-educated US counties: 49.1% of adults 25 and older hold a bachelor’s degree, above the national 35.0%. About 14.4% of workers primarily work from home, close to the national 14.0%, and the average commute runs about 20 minutes each way.
Monroe County Population History (2010-2024)
The county of Monroe County had a population of 138,574 in 2010 and 140,702 in 2024, a 1.5% growth over 14 years. The peak was 148,178 in 2019. Average annual growth rate: 0.12%.
140,702
Population (2024)
138,574
Population (2010)
148,178
Peak (2019)
0.12%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 138,574 |
| 2011 | 140,280 |
| 2012 | 141,570 |
| 2013 | 142,185 |
| 2014 | 143,554 |
| 2015 | 144,432 |
| 2016 | 145,936 |
| 2017 | 146,840 |
| 2018 | 147,411 |
| 2019 | 148,178 |
| 2020 | 140,645 |
| 2021 | 141,243 |
| 2022 | 141,181 |
| 2023 | 141,052 |
| 2024 | 140,702 |
Race & Ethnicity
| White | 83.4% |
| Black or African American | 3.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.0% |
| Two or More Races | 0.0% |
Age & Sex
31.4
Median Age
50.1%
Female
49.9%
Male
14.2%
Age 65+
Age Distribution
Children (under 15): 13.2% · Seniors (65+): 14.2%
Income & Poverty
| Median household income | $63,372$-6,679 vs state |
| Mean household income | $87,694 |
| Per-capita income | $36,836 |
| Poverty rate | 8.8%+0.4% vs state |
| Unemployment rate | 3.4% |
| Employment-to-population | 58.5% |
Top Industries by Employment
The largest employment sector in Monroe County is professional & business services, accounting for 35.6% of workers.
How residents commute
2.1%
Drive alone
6.3%
Carpool
65.8%
Public transit
14.4%
Work from home
19.8 min
Avg commute
Housing
$261,700+$60,100 vs state
Median home value
$1,151
Median rent
54.8%
Homeownership rate
64,850
Total housing units
89.8%
Occupied
10.2%
Vacant
45.2%
Renter-occupied
Social & access
94.7%
With health insurance
96.1%
With broadband internet
32.4%
Foreign-born
5.1%
Veterans (18+)
11.8%
With a disability
89.0%
Speak language other than English at home
Education
94.8%
High School+
49.1%
Bachelor's+
Largest cities in Indiana
Other counties in Indiana
Part of Indiana
Metro areas in Indiana
County rankings
Frequently Asked Questions
Monroe County, Indiana has a population of 139,822 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 12th-largest county in Indiana. Population density is 354 people per square mile.
The population of Monroe County has grown 1.5% since 2010 (138,574 → 140,702), a +0.11% annualized rate.
The median household income in Monroe County, Indiana is $63,372, with mean (average) household income of $87,694 and per-capita income of $36,836. 8.8% of residents live below the federal poverty level.
In Monroe County, the largest racial and ethnic groups are White (83.4%), Black or African American (3.6%), Hispanic or Latino (1.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Monroe County, Indiana is 31.4 years. Residents are 50.1% female and 49.9% male.
The median home value in Monroe County is $261,700 and median monthly rent is $1,151. 54.8% of occupied housing units are owner-occupied. The county has 64,850 total housing units, 10.2% of which are vacant.
The largest employment sector in Monroe County, Indiana is professional, scientific, and management services, employing 35.6% of workers. The unemployment rate is 3.4%.
Indianapolis is among the largest cities associated with Monroe County, Indiana, with a population of 882,043.
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Full rankings of Indiana counties
Statewide data for Indiana
Population, race, income, age, and trends across Indiana
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.