Olney, Maryland Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Olney, Maryland is 36,000 as of the 2023 American Community Survey, making it the 29th-largest city in Maryland. The median household income is $171,766, the median home value is $632,400, and the median age is 41.6.
36,000
Population
2225
People / sq mi
$171,766
Median Income
$632,400
Median Home Value
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Olney covers 16.2 sq mi of land at 2225 people per square mile.
About Olney, MD
Among US cities, Olney stands out first on household income: a median of $171,766, above the US median of $78,538. Olney is a city in Maryland with a population of 36,000. It ranks #29 among cities in Maryland by population.
Income is a real outlier — the median household pulls in $171,766, putting Olney near the top of US cities. Only 2.7% of residents live in poverty, below the national 12.4%. Home values run above average at $632,400, with typical rent around $2,409.
The population is unusually well-credentialed for US cities — 64.7% of adults have a four-year degree, above the national 35.0%. Working from home is common here: 26.6% of workers do so, above the national 14.0%, and the average commute runs about 32 minutes each way.
Taken together, the income and housing figures place Olney firmly in the higher-cost, higher-earning tier of US cities — a profile that tends to track dense job markets and competitive housing.
Race & Ethnicity
| White | 57.2% |
| Black or African American | 14.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.4% |
| Two or More Races | 0.0% |
Economy & Income
$171,766
Median Household Income
$66,802
Per Capita Income
2.7%
Poverty Rate
2.8%
Unemployment Rate
Housing
$632,400
Median Home Value
$2,409
Median Rent
88.6%
Owner-Occupied
Education
96.5%
High School+
64.7%
Bachelor's+
Commute
2.3%
Drive Alone
62.1%
Public Transit
26.6%
Work From Home
32.2 min
Avg Commute
Community Profile
40.6%
Foreign Born
73.2%
Non-English at Home
5.3%
Veterans
9.7%
With Disability
97.4%
Health Insurance
98.6%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 22.9% |
| Finance, Insurance & Real Estate | 22.6% |
| Public Administration | 13.7% |
| Education, Health Care & Social Services | 7.4% |
| Information | 6.9% |
| Construction | 6.4% |
| Arts, Entertainment & Food Services | 5.4% |
| Manufacturing | 3.1% |
| Transportation & Warehousing | 2.0% |
| Retail Trade | 1.7% |
| Agriculture & Mining | 0.1% |
Largest cities in Maryland
Largest counties in Maryland
Part of Maryland
Metro areas in Maryland
City rankings
Frequently Asked Questions
Olney, Maryland has a population of 36,000 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 29th-largest city in Maryland.
The median household income in Olney, Maryland is $171,766, with 2.7% of residents living below the federal poverty level.
The median home value in Olney, Maryland is $632,400, with median monthly rent at $2,409 and a homeownership rate of 88.6%.
The median age in Olney, Maryland is 41.6 years. The population is 49.8% male and 50.2% female.
Where to stay in Olney
Visiting or relocating to Olney, MD? Compare hotels and short-term rentals across the metro — live availability and prices.
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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.