Overview
Montgomery County is home to 1,057,586 residents (Census ACS 5-Year, 2023), making it the most populous county in Maryland and one of the largest in the United States, with a population higher than 99% of all U.S. counties. Situated in central Maryland along the northwestern border of Washington, D.C., the county serves as a major suburban hub for the nation's capital region.
The numbers that define Montgomery County cluster at the top of national rankings. Median household income sits at $128,733 (Census ACS 5-Year, 2023), higher than 99% of U.S. counties. More than 60% of residents hold a bachelor's degree or higher. Median home values reach $615,200. These aren't isolated data points. They form a consistent picture of a county where income, education, and housing costs all run well above national and state figures.
The county's labor force of 553,416 workers (BLS LAUS, 2025) ranks above 99% of U.S. counties by size. Its unemployment rate of 3.5% falls below the national average. Racially and ethnically, Montgomery County is one of the most diverse counties in the country, with no single group constituting a majority of the population.
Demographics
The median age in Montgomery County is 40.1 years (Census ACS 5-Year, 2023), placing it near the middle of U.S. counties nationally at the 36th ranking. That's younger than many suburban counties of similar size, likely reflecting a steady inflow of working-age professionals drawn by proximity to federal employers and the private-sector economy clustered around them.
Educational attainment is where the county separates itself. Some 60.3% of residents 25 and older hold a bachelor's degree or higher (Census ACS 5-Year, 2023), a rate that exceeds 99% of U.S. counties. For context, the national average hovers around 33%. The concentration of highly educated residents tracks with the types of employers in the area: federal agencies, research institutions, biotech firms, and defense contractors.
The county's racial and ethnic composition reflects broad diversity. White residents account for 40.4% of the population, Hispanic residents 20.6%, Black residents 18.3%, and Asian residents 15.1% (Census ACS 5-Year, 2023). The Asian population percentage ranks higher than 99% of U.S. counties. The Hispanic share ranks above 87% of counties nationally. Native American and Alaska Native residents make up 0.1% of the population.
No single racial or ethnic group holds a majority. That's relatively uncommon among U.S. counties and shapes everything from school programming to retail corridors to the languages spoken in county offices.
Education
Montgomery County Public Schools enrolled 160,564 students (Education Data Portal, 2021), a figure that exceeds 99% of U.S. counties and makes it one of the largest school districts in the country. Per-pupil spending reached $19,824 (Education Data Portal, 2020), well above the national average of roughly $15,000 and higher than 84% of U.S. counties.
The student-teacher ratio stands at 13.6 to 1 (Education Data Portal, 2021), slightly better than the national average of approximately 15.5 to 1. That ratio ranks near the middle of Maryland counties at the 42nd state ranking.
The graduation rate of 86.4% (Education Data Portal, 2019) falls just below the national average of about 87%. For a county with this level of income and education spending, that number is worth watching. It sits at the 45th national ranking and the 29th state ranking, meaning more than half of Maryland's counties report higher graduation rates. The gap between spending inputs and graduation outcomes suggests that aggregate numbers may mask variation across the district's many schools and communities.
Economy & Employment
Median household income of $128,733 (Census ACS 5-Year, 2023) places Montgomery County above 99% of U.S. counties and at the 88th ranking within Maryland. Per capita income hits $66,124, higher than 99% of counties nationally and 96% of Maryland counties.
The labor force numbers confirm the scale. Of the 553,416 people in the civilian labor force, 534,197 were employed and 19,219 were unemployed as of early 2025 (BLS LAUS, 2025). The unemployment rate of 3.5% ranks at the 39th national level, meaning roughly 61% of U.S. counties report lower unemployment. That's a middling result for a county with this income profile, though the rate still falls below most national benchmarks.
The poverty rate of 7.0% (Census ACS 5-Year, 2023) is lower than 93% of U.S. counties. In a county where median household income tops $128,000, a 7% poverty rate means roughly 74,000 residents still live below the poverty line. High regional costs of living can push that effective number higher, since federal poverty thresholds don't adjust for local prices.
IRS data offers another angle. The county's 534,520 tax returns reported an average adjusted gross income of $141,549 and average total income of $143,473 (IRS Statistics of Income, 2021). Total AGI across all returns was $75.7 billion. These figures rank above 98% of U.S. counties, reinforcing the income concentration visible in Census data.
Housing & Cost of Living
Median home value in Montgomery County is $615,200 (Census ACS 5-Year, 2023), higher than 98% of U.S. counties and 96% of Maryland counties. Median gross rent is $2,030 per month, a figure that exceeds 99% of counties nationally.
The county has 405,127 total housing units with 17,246 sitting vacant, producing a vacancy rate of just 4.3% (Census ACS 5-Year, 2023). That vacancy rate is lower than 98% of U.S. counties. A tight housing market with few empty units puts upward pressure on both rents and purchase prices.
HUD Fair Market Rent data for fiscal year 2026 (HUD Fair Market Rents, 2026) is available for the county, though bedroom-specific breakdowns were not included in the dataset provided.
The affordability math tells a clear story. A household earning the median income of $128,733 would spend roughly 19% of gross income on median rent, staying within the standard 30% affordability threshold. But for households earning below the median, especially the 7% in poverty, monthly rents above $2,000 consume most or all of their income. The 4.3% vacancy rate leaves few alternatives.
Health & Wellness
Montgomery County's health indicators are consistently better than most U.S. counties. The obesity rate is 25.9% (CDC PLACES, 2023), lower than 98% of counties nationally. Depression prevalence is 17.7%, lower than 98% of counties. Poor physical health days affect 9.7% of residents, a rate lower than 99% of U.S. counties. Poor mental health days affect 12.8%, also lower than all but a handful of counties at the 0th national ranking.
High blood pressure prevalence stands at 28.8% (CDC PLACES, 2023), lower than 88% of U.S. counties. Diabetes prevalence is 9.2%, at the 17th national ranking. Cholesterol screening rates reach 89.6%, higher than virtually every other U.S. county at the 100th ranking.
Annual checkup rates are 75.4% (CDC PLACES, 2023), sitting right at the national midpoint at the 49th ranking. That's surprisingly average for a county with this income and education level.
The uninsured rate of 9.1% (CDC PLACES, 2023) is higher than 69% of U.S. counties. For a county ranking at the top in income and education, a 9.1% uninsured rate stands out. It likely reflects the county's large immigrant population, including residents who may not qualify for employer-sponsored or public coverage.
Climate & Natural Disasters
Twenty-one federal disaster declarations since 1971 (FEMA OpenFEMA, 2026). That's the county's hazard record, and it lands above roughly half of all U.S. counties. Not exceptional exposure, but not clean either.
The climate is mid-Atlantic moderate. Annual average temperature is 54.6°F (NOAA Climate Data Online, 2025), with highs averaging 63.3°F and lows at 46°F. Precipitation runs 34.4 inches per year. Snowfall averages 21.1 inches annually, right around the national midpoint.
Snow is the most consistent hazard. Five snowstorm declarations stretch from 1993 through 2016, and the county's most recent federal declaration, an emergency in January 2026, was for a winter storm. Hurricanes have triggered four declarations, including two in 2012 alone. Severe storms add four more. The county sits in the mid-Atlantic corridor that catches both coastal storms moving north and nor'easters pushing south.
Flooding hit hardest in the early record, with three declarations between 1971 and 1975 and none since. The pandemic years produced two biological disaster declarations in 2020.
The storm risk here is recurring and shows no sign of tapering. As winter precipitation events grow less predictable along the East Coast, the county's history suggests that declaration count will keep climbing.
Financial Profile
IRS data from tax year 2021 shows 534,520 returns filed from Montgomery County, with total adjusted gross income of $75.7 billion and total income of $76.7 billion (IRS Statistics of Income, 2021). The average AGI per return was $141,549, and average income per return was $143,473. Both figures rank above 98% of U.S. counties.
Banking infrastructure is substantial. The FDIC reports 92 bank branches in the county holding $27.1 billion in total deposits (FDIC Summary of Deposits, 2023). Branch count ranks above 95% of counties nationally. The deposit total, above 97% of counties, reflects the concentration of high-income households and businesses.
Social Security Administration data shows 162,700 OASDI beneficiaries in Montgomery County (SSA OASDI, 2024), a count ranking above 98% of U.S. counties. That figure includes retired workers, disabled workers, and their dependents. With a population over one million, beneficiaries represent about 15.4% of all residents, a relatively low share that's consistent with the county's younger-than-average median age and large working-age population.
Key Comparisons
Montgomery County's position relative to state and national benchmarks breaks down into three tiers.
At the very top nationally (above 95% of counties): population, median household income, per capita income, median home values, rents, educational attainment, labor force size, employment count, total AGI, bank branches, deposits, school enrollment, and Social Security beneficiaries. These metrics reflect the county's scale and wealth.
In the middle range: unemployment rate (39th nationally), median age (36th), graduation rate (45th), student-teacher ratio (45th), and annual checkup rates (49th). These middling results are notable precisely because the county's income and education numbers suggest they should be higher.
Especially strong compared to peers: obesity (lower than 98% of counties), depression (lower than 98%), poor physical health (lower than 99%), high blood pressure (lower than 88%), and vacancy rate (lower than 98%). Health outcomes and housing tightness stand out even against the county's own high benchmarks.
Within Maryland, the county ranks at or near the top for income, home values, population, and educational attainment (all above the 88th state ranking). It falls closer to the middle for graduation rate (29th state ranking), commute times (29th), and unemployment (38th).
The gap between the county's income position (99th nationally) and its uninsured rate (31st nationally, meaning 69% of counties have lower uninsured rates) is one of the more notable patterns in the data. High incomes don't automatically translate to universal coverage, particularly in diverse, high-cost metropolitan areas.
Data Sources
- Census ACS 5-Year, 2023: Population, income, housing, demographics, education attainment, commute times, poverty rate
- BLS LAUS, 2025: Unemployment rate, labor force, employment counts
- CDC PLACES, 2023: Health metrics including obesity, diabetes, mental health, insurance coverage, preventive care
- HUD Fair Market Rents, 2026: Data not available for Montgomery County
- FEMA OpenFEMA, 2026: Disaster declarations and history
- IRS Statistics of Income, 2021: Tax returns, adjusted gross income, total income
- FDIC Summary of Deposits, 2023: Bank branch counts and total deposits
- NOAA Climate Data Online, 2025: Temperature and precipitation averages
- SSA OASDI, 2024: Social Security beneficiary counts
- USDA Census of Agriculture, 2022: Data not available for Montgomery County
- Education Data Portal, 2021: Per-pupil spending, enrollment, student-teacher ratio, graduation rate