Montgomery County, Indiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 39th-largest in Indiana
The population of Montgomery County, Indiana is 38,155 as of the 2023 American Community Survey, making it the 39th-largest county in Indiana. The median household income is $66,571, the median home value is $166,300, and the median age is 40.0.
The population of Montgomery County has grown 1.4% since 2010 (38,096 → 38,633), a +0.10% annualized rate.
38,155
Population
+0.10%
Annual growth
76
People / sq mi
$66,571
Median Income
$166,300
Median Home Value
Montgomery County covers 505 sq mi of land at 75.6 people per square mile.
About Montgomery County, IN
Homeownership is the standout figure in Montgomery County: 77.8% of homes are owner-occupied, higher than the national rate. With 38,155 residents, Montgomery County is a county in Indiana. It ranks #39 among counties in Indiana by population.
Median household income is $66,571, below the US median of $78,538. Poverty runs at 7.6%, below the national 12.4%. Homes carry a median value of $166,300, with typical rent around $827.
19.5% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. About 7.0% of the workforce is home-based, below the national 14.0%, and the average commute runs about 22 minutes each way.
The ownership rate anchors the housing story in Montgomery County, and tends to move with the age structure and home-value figures above.
Montgomery County Population History (2010-2024)
The county of Montgomery County had a population of 38,096 in 2010 and 38,633 in 2024, a 1.4% growth over 14 years. The peak was 38,633 in 2024. Average annual growth rate: 0.10%.
38,633
Population (2024)
38,096
Population (2010)
38,633
Peak (2024)
0.10%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 38,096 |
| 2011 | 38,340 |
| 2012 | 38,180 |
| 2013 | 38,143 |
| 2014 | 38,158 |
| 2015 | 38,255 |
| 2016 | 38,240 |
| 2017 | 38,343 |
| 2018 | 38,251 |
| 2019 | 38,275 |
| 2020 | 37,943 |
| 2021 | 38,069 |
| 2022 | 38,345 |
| 2023 | 38,571 |
| 2024 | 38,633 |
Race & Ethnicity
| White | 90.5% |
| Black or African American | 0.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.1% |
Age & Sex
40.0
Median Age
49.1%
Female
50.9%
Male
18.4%
Age 65+
Age Distribution
Children (under 15): 18.9% · Seniors (65+): 18.4%
Income & Poverty
| Median household income | $66,571$-3,480 vs state |
| Mean household income | $83,964 |
| Per-capita income | $34,462 |
| Poverty rate | 7.6%-0.8% vs state |
| Unemployment rate | 2.4% |
| Employment-to-population | 60.9% |
Top Industries by Employment
The largest employment sector in Montgomery County is manufacturing, accounting for 25.0% of workers.
How residents commute
0.1%
Drive alone
3.5%
Carpool
79.4%
Public transit
7.0%
Work from home
22.0 min
Avg commute
Housing
$166,300$-35,300 vs state
Median home value
$827
Median rent
77.8%
Homeownership rate
16,534
Total housing units
93.9%
Occupied
6.1%
Vacant
22.2%
Renter-occupied
Social & access
91.8%
With health insurance
93.3%
With broadband internet
20.8%
Foreign-born
7.7%
Veterans (18+)
15.8%
With a disability
94.3%
Speak language other than English at home
Education
88.9%
High School+
19.5%
Bachelor's+
Largest cities in Indiana
Other counties in Indiana
Part of Indiana
Metro areas in Indiana
County rankings
Frequently Asked Questions
Montgomery County, Indiana has a population of 38,155 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 39th-largest county in Indiana. Population density is 76 people per square mile.
The population of Montgomery County has grown 1.4% since 2010 (38,096 → 38,633), a +0.10% annualized rate.
The median household income in Montgomery County, Indiana is $66,571, with mean (average) household income of $83,964 and per-capita income of $34,462. 7.6% of residents live below the federal poverty level.
In Montgomery County, the largest racial and ethnic groups are White (90.5%), Hispanic or Latino (1.2%), Black or African American (0.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Montgomery County, Indiana is 40.0 years. Residents are 49.1% female and 50.9% male.
The median home value in Montgomery County is $166,300 and median monthly rent is $827. 77.8% of occupied housing units are owner-occupied. The county has 16,534 total housing units, 6.1% of which are vacant.
The largest employment sector in Montgomery County, Indiana is manufacturing, employing 25.0% of workers. The unemployment rate is 2.4%.
Indianapolis is among the largest cities associated with Montgomery County, Indiana, with a population of 882,043.
Montgomery County, IN Climate
Montgomery County, IN has an average annual temperature of 10.6°C (51°F) and receives about 1024 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
10.6°C
Avg Temp
1024
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -4° / 24° | 53 mm |
| February | -2° / 29° | 52 mm |
| March | 4° / 40° | 81 mm |
| April | 10° / 51° | 98 mm |
| May | 16° / 61° | 108 mm |
| June | 22° / 71° | 105 mm |
| July | 24° / 74° | 108 mm |
| August | 22° / 72° | 103 mm |
| September | 19° / 65° | 79 mm |
| October | 12° / 54° | 72 mm |
| November | 5° / 42° | 88 mm |
| December | -1° / 31° | 77 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 Montgomery County, IN
The most comfortable months to visit Montgomery County, IN are typically June, September and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -9°C low). May is usually the wettest month.
Where to stay near Montgomery County
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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.