Montgomery County's 2026 population is estimated at 1,108,025, reflecting a 1.18% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Montgomery County is the largest county in Maryland. The 2010 population was 975,619 and has grown 13.57% since 2010.
Data after 2023 is projected based on recent change
Overall: 40.2 years
Female: 41.5 years
Male: 38.9 years
There are 822,810 adults, (181,139 of whom are seniors) in Montgomery County.
Female: 546,559 (51.3%)
Male: 519,390 (48.7%)
The racial composition of Montgomery County includes 42.06% White, 18.6% Black or African American, 15.39% Asian, 11.85% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 448,341 | 42.06% |
| Black or African American | 198,264 | 18.6% |
| Asian | 164,064 | 15.39% |
| Other race | 126,329 | 11.85% |
| Two or more races | 122,326 | 11.48% |
| Native American | 6,190 | 0.58% |
| Native Hawaiian or Pacific Islander | 435 | 0.04% |
Montgomery County 's average per capita income is $75,206. Household income levels show a median of $132,450. The poverty rate stands at 7.45%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $191,240 | $244,283 |
| Families | $164,096 | $213,661 |
| Households | $132,450 | $181,376 |
| Non Families | $79,939 | $104,223 |
Average Income
Median Household Income
Poverty Rate
