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
Arnold covers 10.8 sq mi of land at 2206 people per square mile.
About Arnold, MD
Arnold is a city in Maryland with a population of 23,866. It ranks #62 among cities in Maryland by population. The median age is 38.2, in line with the national median. The population is 49.1% male and 50.9% female.
The median household income in Arnold is $137,799, above the US median of $74,580. 2.4% of residents live below the federal poverty level. Home values sit at a median of $547,800, with monthly rent averaging $2,177. The homeownership rate of 85.6% is higher than the national rate of 64.8%.
Educational attainment in Arnold reflects 59.4% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 21.2% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 30.3 minutes each way.
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% |
Largest cities in Maryland
Largest counties in Maryland
Part of Maryland
Metro areas in Maryland
City rankings
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.
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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.