Montgomery County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 79th-largest in Missouri
The population of Montgomery County, Missouri is 11,422 as of the 2023 American Community Survey, making it the 79th-largest county in Missouri. The median household income is $61,042, the median home value is $171,300, and the median age is 43.8.
The population of Montgomery County has declined 5.7% since 2010 (12,209 → 11,511), a -0.42% annualized rate.
11,422
Population
-0.42%
Annual growth
21
People / sq mi
$61,042
Median Income
$171,300
Median Home Value
Montgomery County covers 535 sq mi of land at 21.3 people per square mile.
About Montgomery County, MO
Montgomery County is defined demographically by education — 16.5% of adults hold a bachelor’s degree, below the national average. With 11,422 residents, Montgomery County is a county in Missouri.
The typical household here earns about $61,042, below the US median of $78,538. Poverty runs at 9.9%, below the national 12.4%. The typical home is valued at $171,300, with typical rent around $767.
Fewer adults hold degrees here than in most comparable places — 16.5%, below the national 35.0%. Around 7.9% of workers work from home, below the national 14.0%, and the average commute runs about 28 minutes each way.
Montgomery County Population History (2010-2024)
The county of Montgomery County had a population of 12,209 in 2010 and 11,511 in 2024, a -5.7% growth over 14 years. The peak was 12,209 in 2010. Average annual growth rate: -0.42%.
11,511
Population (2024)
12,209
Population (2010)
12,209
Peak (2010)
-0.42%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 12,209 |
| 2011 | 12,206 |
| 2012 | 11,971 |
| 2013 | 11,852 |
| 2014 | 11,725 |
| 2015 | 11,579 |
| 2016 | 11,459 |
| 2017 | 11,388 |
| 2018 | 11,458 |
| 2019 | 11,472 |
| 2020 | 11,286 |
| 2021 | 11,440 |
| 2022 | 11,463 |
| 2023 | 11,430 |
| 2024 | 11,511 |
Race & Ethnicity
| White | 93.3% |
| Black or African American | 1.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.0% |
| Two or More Races | 0.0% |
Age & Sex
43.8
Median Age
49.4%
Female
50.6%
Male
20.4%
Age 65+
Age Distribution
Children (under 15): 18.2% · Seniors (65+): 20.4%
Income & Poverty
| Median household income | $61,042$-7,878 vs state |
| Mean household income | $73,885 |
| Per-capita income | $29,876 |
| Poverty rate | 9.9%+1.5% vs state |
| Unemployment rate | 1.6% |
| Employment-to-population | 55.6% |
Top Industries by Employment
The largest employment sector in Montgomery County is professional & business services, accounting for 19.3% of workers.
How residents commute
0.0%
Drive alone
2.9%
Carpool
77.0%
Public transit
7.9%
Work from home
28.1 min
Avg commute
Housing
$171,300$-44,300 vs state
Median home value
$767
Median rent
73.3%
Homeownership rate
5,797
Total housing units
79.2%
Occupied
20.8%
Vacant
26.7%
Renter-occupied
Social & access
90.0%
With health insurance
89.5%
With broadband internet
17.9%
Foreign-born
10.4%
Veterans (18+)
18.2%
With a disability
98.0%
Speak language other than English at home
Education
88.5%
High School+
16.5%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Montgomery County, Missouri has a population of 11,422 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 79th-largest county in Missouri. Population density is 21 people per square mile.
The population of Montgomery County has declined 5.7% since 2010 (12,209 → 11,511), a -0.42% annualized rate.
The median household income in Montgomery County, Missouri is $61,042, with mean (average) household income of $73,885 and per-capita income of $29,876. 9.9% of residents live below the federal poverty level.
In Montgomery County, the largest racial and ethnic groups are White (93.3%), Hispanic or Latino (2.0%), Black or African American (1.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Montgomery County, Missouri is 43.8 years. Residents are 49.4% female and 50.6% male.
The median home value in Montgomery County is $171,300 and median monthly rent is $767. 73.3% of occupied housing units are owner-occupied. The county has 5,797 total housing units, 20.8% of which are vacant.
The largest employment sector in Montgomery County, Missouri is professional, scientific, and management services, employing 19.3% of workers. The unemployment rate is 1.6%.
Kansas City is among the largest cities associated with Montgomery County, Missouri, with a population of 508,233.
Montgomery County, MO Climate
Montgomery County, MO has an average annual temperature of 12°C (54°F) and receives about 984 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12°C
Avg Temp
984
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -3° / 27° | 42 mm |
| February | 0° / 33° | 48 mm |
| March | 6° / 43° | 81 mm |
| April | 12° / 54° | 97 mm |
| May | 18° / 64° | 118 mm |
| June | 23° / 73° | 103 mm |
| July | 25° / 77° | 90 mm |
| August | 24° / 75° | 85 mm |
| September | 20° / 67° | 93 mm |
| October | 13° / 56° | 76 mm |
| November | 6° / 43° | 85 mm |
| December | 0° / 32° | 66 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, MO
The most comfortable months to visit Montgomery County, MO are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 31°C high). The coldest is January (near -8°C low). May is usually the wettest month.
Where to stay near Montgomery County
Visiting or relocating to Montgomery County, MO? Compare hotels and short-term rentals across the county — live availability and prices.
Top-rated places to stay near Montgomery County
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a move to Montgomery County?
Get relocation and cost-of-living insights for Montgomery County, MO by email. No spam, unsubscribe anytime.
More from Missouri
Population 996,618
Population 717,021
Population 409,830
Population 301,121
Full rankings of Missouri counties
Statewide data for Missouri
Population, race, income, age, and trends across Missouri
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.