Montgomery County, Maryland Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 1st-largest in Maryland
The population of Montgomery County, Maryland is 1,057,586 as of the 2023 American Community Survey, making it the 1st-largest county in Maryland. The median household income is $128,733, the median home value is $615,200, and the median age is 40.1.
The population of Montgomery County has grown 10.9% since 2010 (975,619 → 1,082,273), a +0.74% annualized rate.
1,057,586
Population
+0.74%
Annual growth
2145
People / sq mi
$128,733
Median Income
$615,200
Median Home Value
Montgomery County covers 493 sq mi of land at 2144.6 people per square mile.
About Montgomery County, MD
Montgomery County is a county in Maryland with a population of 1,057,586. It ranks #1 among counties in Maryland by population. The median age is 40.1, older than the national median. The population is 48.7% male and 51.3% female.
The median household income in Montgomery County is $128,733, above the US median of $74,580. 4.9% of residents live below the federal poverty level. Home values sit at a median of $615,200, with monthly rent averaging $2,030. The homeownership rate of 65.3% is close to the national rate of 64.8%.
Educational attainment in Montgomery County reflects 60.3% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 25.5% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 32.4 minutes each way.
Montgomery County Population History (2010-2024)
The county of Montgomery County had a population of 975,619 in 2010 and 1,082,273 in 2024, a 10.9% growth over 14 years. The peak was 1,082,273 in 2024. Average annual growth rate: 0.75%.
1,082,273
Population (2024)
975,619
Population (2010)
1,082,273
Peak (2024)
0.75%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 975,619 |
| 2011 | 991,325 |
| 2012 | 1,005,310 |
| 2013 | 1,015,534 |
| 2014 | 1,025,063 |
| 2015 | 1,033,370 |
| 2016 | 1,039,327 |
| 2017 | 1,047,239 |
| 2018 | 1,048,794 |
| 2019 | 1,051,129 |
| 2020 | 1,060,856 |
| 2021 | 1,056,087 |
| 2022 | 1,061,132 |
| 2023 | 1,069,397 |
| 2024 | 1,082,273 |
Race & Ethnicity
| White | 44.4% |
| Black or African American | 18.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.5% |
| Two or More Races | 0.0% |
Age & Sex
40.1
Median Age
51.3%
Female
48.7%
Male
16.6%
Age 65+
Age Distribution
Children (under 15): 18.8% · Seniors (65+): 16.6%
Income & Poverty
| Median household income | $128,733+$27,081 vs state |
| Mean household income | $177,086 |
| Per-capita income | $66,124 |
| Poverty rate | 4.9%-1.4% vs state |
| Unemployment rate | 3.3% |
| Employment-to-population | 66.2% |
Top Industries by Employment
The largest employment sector in Montgomery County is finance & real estate, accounting for 22.8% of workers.
How residents commute
8.5%
Drive alone
1.7%
Carpool
54.2%
Public transit
25.5%
Work from home
32.4 min
Avg commute
Housing
$615,200+$217,500 vs state
Median home value
$2,030
Median rent
65.3%
Homeownership rate
405,127
Total housing units
95.7%
Occupied
4.3%
Vacant
34.7%
Renter-occupied
Social & access
93.2%
With health insurance
98.0%
With broadband internet
38.6%
Foreign-born
4.1%
Veterans (18+)
9.1%
With a disability
57.5%
Speak language other than English at home
Education
91.2%
High School+
60.3%
Bachelor's+
Largest cities in Maryland
Other counties in Maryland
Part of Maryland
Metro areas in Maryland
County rankings
Common questions about Montgomery County, MD
Frequently Asked Questions
Montgomery County, Maryland has a population of 1,057,586 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 1st-largest county in Maryland. Population density is 2145 people per square mile.
The population of Montgomery County has grown 10.9% since 2010 (975,619 → 1,082,273), a +0.74% annualized rate.
The median household income in Montgomery County, Maryland is $128,733, with mean (average) household income of $177,086 and per-capita income of $66,124. 4.9% of residents live below the federal poverty level.
In Montgomery County, the largest racial and ethnic groups are White (44.4%), Black or African American (18.6%), Hispanic or Latino (1.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Montgomery County, Maryland is 40.1 years. Residents are 51.3% female and 48.7% male.
The median home value in Montgomery County is $615,200 and median monthly rent is $2,030. 65.3% of occupied housing units are owner-occupied. The county has 405,127 total housing units, 4.3% of which are vacant.
The largest employment sector in Montgomery County, Maryland is finance, insurance, and real estate, employing 22.8% of workers. The unemployment rate is 3.3%.
Baltimore is among the largest cities associated with Montgomery County, Maryland, with a population of 577,193.
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Full rankings of Maryland counties
Statewide data for Maryland
Population, race, income, age, and trends across Maryland
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.