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
Get Olney's next ACS population data
Subscribe for Population Review updates by email. No spam, unsubscribe anytime.
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.
Olney Cdp, MD Climate
Olney Cdp, MD has an average annual temperature of 12.5°C (55°F) and receives about 1111 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12.5°C
Avg Temp
1111
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 0° / 32° | 81 mm |
| February | 2° / 35° | 73 mm |
| March | 6° / 44° | 97 mm |
| April | 12° / 53° | 87 mm |
| May | 17° / 63° | 114 mm |
| June | 22° / 71° | 96 mm |
| July | 24° / 76° | 102 mm |
| August | 24° / 74° | 97 mm |
| September | 20° / 68° | 100 mm |
| October | 13° / 56° | 87 mm |
| November | 8° / 46° | 92 mm |
| December | 3° / 37° | 85 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Olney Cdp, MD
The most comfortable months to visit Olney Cdp, MD are typically June, September and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 31°C high). The coldest is January (near -5°C low). May is usually the wettest month.
Where to stay near Olney
Visiting or relocating to Olney, MD? Compare hotels and short-term rentals across the metro — live availability and prices.
Top-rated places to stay near Olney
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a move to Olney?
Get relocation and cost-of-living insights for Olney, MD by email. No spam, unsubscribe anytime.
More from Maryland
Population 577,193
Population 105,871
Population 90,521
Population 82,541
Population 82,129
Full rankings of Maryland cities by population
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.