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
Educational attainment is the headline number in Montgomery County: 60.3% of adults 25 and older have a four-year degree. Montgomery County is a county in Maryland with a population of 1,057,586. That makes it one of the ten largest counties in Maryland in the country, at #1 by population.
Income is a real outlier — the median household pulls in $128,733, putting Montgomery County near the top of US counties. Only 4.9% of residents live in poverty, below the national 12.4%. Real estate commands a premium here — a median home value of $615,200, with typical rent around $2,030.
Degree attainment is near the top of the range for US counties: 60.3% of adults 25+ hold a bachelor’s, above the 35.0% national rate. Working from home is common here: 25.5% of workers do so, above the national 14.0%, and the average commute runs about 32 minutes each way.
The education numbers are the throughline: a college-heavy population in Montgomery County usually coincides with higher incomes and a workforce concentrated in professional and information industries.
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+
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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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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.