Adelphi, Maryland Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Adelphi, Maryland is 17,210 as of the 2023 American Community Survey, making it the 82nd-largest city in Maryland. The median household income is $80,833, the median home value is $401,700, and the median age is 32.9.
17,210
Population
6327
People / sq mi
$80,833
Median Income
$401,700
Median Home Value
Adelphi covers 2.7 sq mi of land at 6327 people per square mile.
About Adelphi, MD
Adelphi is a city in Maryland with a population of 17,210. It ranks #82 among cities in Maryland by population. The median age is 32.9, younger than the national median. The population is 51.6% male and 48.4% female.
The median household income in Adelphi is $80,833, above the US median of $74,580. 11.7% of residents live below the federal poverty level. Home values sit at a median of $401,700, with monthly rent averaging $1,757. The homeownership rate of 42.7% is lower than the national rate of 64.8%.
Educational attainment in Adelphi reflects 27.4% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 9.9% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 34.6 minutes each way.
Race & Ethnicity
| White | 14.0% |
| Black or African American | 30.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.5% |
| Two or More Races | 0.0% |
Economy & Income
$80,833
Median Household Income
$32,608
Per Capita Income
11.7%
Poverty Rate
4.5%
Unemployment Rate
Housing
$401,700
Median Home Value
$1,757
Median Rent
42.7%
Owner-Occupied
Education
72.1%
High School+
27.4%
Bachelor's+
Commute
10.5%
Drive Alone
53.5%
Public Transit
9.9%
Work From Home
34.6 min
Avg Commute
Community Profile
21.6%
Foreign Born
27.4%
Non-English at Home
3.0%
Veterans
8.1%
With Disability
72.6%
Health Insurance
99.7%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 24.0% |
| Construction | 18.3% |
| Finance, Insurance & Real Estate | 14.6% |
| Education, Health Care & Social Services | 11.0% |
| Arts, Entertainment & Food Services | 5.7% |
| Information | 5.1% |
| Public Administration | 4.2% |
| Retail Trade | 3.2% |
| Manufacturing | 1.3% |
| Transportation & Warehousing | 1.0% |
| Agriculture & Mining | 0.2% |
Largest cities in Maryland
Largest counties in Maryland
Part of Maryland
Metro areas in Maryland
City rankings
Frequently Asked Questions
Adelphi, Maryland has a population of 17,210 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 82nd-largest city in Maryland.
The median household income in Adelphi, Maryland is $80,833, with 11.7% of residents living below the federal poverty level.
The median home value in Adelphi, Maryland is $401,700, with median monthly rent at $1,757 and a homeownership rate of 42.7%.
The median age in Adelphi, Maryland is 32.9 years. The population is 51.6% male and 48.4% female.
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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.