Martin County, Indiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 88th-largest in Indiana
The population of Martin County, Indiana is 9,854 as of the 2023 American Community Survey, making it the 88th-largest county in Indiana. The median household income is $65,345, the median home value is $150,400, and the median age is 41.8.
The population of Martin County has declined 4.8% since 2010 (10,361 → 9,864), a -0.35% annualized rate.
9,854
Population
-0.35%
Annual growth
29
People / sq mi
$65,345
Median Income
$150,400
Median Home Value
Martin County covers 336 sq mi of land at 29.3 people per square mile.
About Martin County, IN
Martin County is a county in Indiana with a population of 9,854. It ranks #88 among counties in Indiana by population. The median age is 41.8, older than the national median. The population is 51.5% male and 48.5% female.
The median household income in Martin County is $65,345, below the US median of $74,580. 9.6% of residents live below the federal poverty level. Home values sit at a median of $150,400, with monthly rent averaging $643. The homeownership rate of 78.2% is higher than the national rate of 64.8%.
Educational attainment in Martin County reflects 13.2% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 8.8% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 29.6 minutes each way.
Martin County Population History (2010-2024)
The county of Martin County had a population of 10,361 in 2010 and 9,864 in 2024, a -4.8% growth over 14 years. The peak was 10,361 in 2010. Average annual growth rate: -0.35%.
9,864
Population (2024)
10,361
Population (2010)
10,361
Peak (2010)
-0.35%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,361 |
| 2011 | 10,339 |
| 2012 | 10,322 |
| 2013 | 10,238 |
| 2014 | 10,245 |
| 2015 | 10,222 |
| 2016 | 10,195 |
| 2017 | 10,188 |
| 2018 | 10,204 |
| 2019 | 10,179 |
| 2020 | 9,810 |
| 2021 | 9,807 |
| 2022 | 9,808 |
| 2023 | 9,862 |
| 2024 | 9,864 |
Race & Ethnicity
| White | 95.7% |
| Black or African American | 0.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.8% |
| Two or More Races | 0.0% |
Age & Sex
41.8
Median Age
48.5%
Female
51.5%
Male
20.5%
Age 65+
Age Distribution
Children (under 15): 18.2% · Seniors (65+): 20.5%
Income & Poverty
| Median household income | $65,345$-4,706 vs state |
| Mean household income | $80,001 |
| Per-capita income | $32,250 |
| Poverty rate | 9.6%+1.2% vs state |
| Unemployment rate | 1.3% |
| Employment-to-population | 60.3% |
Top Industries by Employment
The largest employment sector in Martin County is manufacturing, accounting for 19.0% of workers.
How residents commute
0.0%
Drive alone
0.8%
Carpool
79.7%
Public transit
8.8%
Work from home
29.6 min
Avg commute
Housing
$150,400$-51,200 vs state
Median home value
$643
Median rent
78.2%
Homeownership rate
4,583
Total housing units
85.7%
Occupied
14.3%
Vacant
21.8%
Renter-occupied
Social & access
92.9%
With health insurance
91.8%
With broadband internet
12.8%
Foreign-born
10.6%
Veterans (18+)
17.0%
With a disability
98.5%
Speak language other than English at home
Education
88.7%
High School+
13.2%
Bachelor's+
Largest cities in Indiana
Other counties in Indiana
Part of Indiana
Metro areas in Indiana
County rankings
Frequently Asked Questions
Martin County, Indiana has a population of 9,854 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 88th-largest county in Indiana. Population density is 29 people per square mile.
The population of Martin County has declined 4.8% since 2010 (10,361 → 9,864), a -0.35% annualized rate.
The median household income in Martin County, Indiana is $65,345, with mean (average) household income of $80,001 and per-capita income of $32,250. 9.6% of residents live below the federal poverty level.
In Martin County, the largest racial and ethnic groups are White (95.7%), Hispanic or Latino (0.8%), Black or African American (0.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Martin County, Indiana is 41.8 years. Residents are 48.5% female and 51.5% male.
The median home value in Martin County is $150,400 and median monthly rent is $643. 78.2% of occupied housing units are owner-occupied. The county has 4,583 total housing units, 14.3% of which are vacant.
The largest employment sector in Martin County, Indiana is manufacturing, employing 19.0% of workers. The unemployment rate is 1.3%.
Indianapolis is among the largest cities associated with Martin County, Indiana, with a population of 882,043.
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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.