Arnold, Maryland Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Arnold, Maryland is 23,866 as of the 2023 American Community Survey, making it the 62nd-largest city in Maryland. The median household income is $137,799, the median home value is $547,800, and the median age is 38.2.
23,866
Population
2206
People / sq mi
$137,799
Median Income
$547,800
Median Home Value
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Arnold covers 10.8 sq mi of land at 2206 people per square mile.
About Arnold, MD
Homeownership is the standout figure in Arnold: 85.6% of homes are owner-occupied, higher than the national rate. Arnold is a city in Maryland with a population of 23,866.
Median household income is $137,799, above the US median of $78,538. Poverty is relatively low for US cities at 2.4%, below the national 12.4%. A typical home is worth $547,800, with typical rent around $2,177.
About 59.4% of adults 25 and older have a bachelor’s degree, above the 35.0% national figure. Remote work is on the higher side at 21.2%, above the national 14.0%, and the average commute runs about 30 minutes each way.
The ownership rate anchors the housing story in Arnold, and tends to move with the age structure and home-value figures above.
Race & Ethnicity
| White | 81.2% |
| Black or African American | 4.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.0% |
Economy & Income
$137,799
Median Household Income
$61,175
Per Capita Income
2.4%
Poverty Rate
2.1%
Unemployment Rate
Housing
$547,800
Median Home Value
$2,177
Median Rent
85.6%
Owner-Occupied
Education
98.0%
High School+
59.4%
Bachelor's+
Commute
0.4%
Drive Alone
70.3%
Public Transit
21.2%
Work From Home
30.3 min
Avg Commute
Community Profile
37.0%
Foreign Born
88.2%
Non-English at Home
11.5%
Veterans
10.1%
With Disability
98.0%
Health Insurance
99.0%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 22.7% |
| Finance, Insurance & Real Estate | 19.2% |
| Public Administration | 12.3% |
| Education, Health Care & Social Services | 8.6% |
| Information | 6.6% |
| Construction | 5.3% |
| Manufacturing | 4.3% |
| Arts, Entertainment & Food Services | 4.2% |
| Retail Trade | 3.1% |
| Transportation & Warehousing | 1.2% |
| Agriculture & Mining | 0.3% |
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Frequently Asked Questions
Arnold, Maryland has a population of 23,866 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 62nd-largest city in Maryland.
The median household income in Arnold, Maryland is $137,799, with 2.4% of residents living below the federal poverty level.
The median home value in Arnold, Maryland is $547,800, with median monthly rent at $2,177 and a homeownership rate of 85.6%.
The median age in Arnold, Maryland is 38.2 years. The population is 49.1% male and 50.9% female.
Where to stay in Arnold
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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.