Arnold, Maryland Demographics & Population 2026
During the 2020–2024 ACS period, Arnold, Maryland had a total population of 24,303, the 60th largest community in Maryland, with a median household income of $141,639, which is 37% higher than the state average. The poverty rate is 3.1%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 37% above the state average — one of the wealthiest communities in Maryland.
- An exceptionally low poverty rate of 3.1% — among the lowest in Maryland.
Arnold Quick Facts
How Arnold Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 23,866 | 24,303 | +1.8% |
| Median household income | $137,799 | $141,639 | +2.8% |
| Median home value | $547,800 | $564,200 | +3.0% |
How Arnold Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 68 | National average: 61
Education
Educational Attainment (Adults 25+)
Arnold Rankings in Maryland
Explore Maryland Rankings
Other Cities in Anne Arundel County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Glen Burnie | 72,590 | $88,280 | 9.3% | $348,900 |
| Severn | 58,402 | $134,423 | 5.7% | $479,200 |
| Odenton | 45,002 | $128,441 | 4.5% | $435,300 |
| Annapolis | 40,720 | $113,860 | 7.8% | $548,900 |
| Severna Park | 40,228 | $169,953 | 2.8% | $647,200 |
| Pasadena | 34,309 | $129,727 | 5.7% | $423,400 |
| Crofton | 29,549 | $150,577 | 2.9% | $519,900 |
| Maryland City | 19,186 | $117,337 | 8.9% | $424,900 |
| Lake Shore | 18,249 | $130,689 | 6.4% | $473,600 |
| Ferndale | 17,529 | $94,948 | 8.2% | $327,600 |
Cities Similar to Arnold
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Fort Washington | 25,134 | $143,333 | $480,100 | 43.0% | 5.3% |
| Elkridge | 26,283 | $139,913 | $454,200 | 59.0% | 7.6% |
| North Laurel | 25,563 | $122,949 | $450,100 | 53.5% | 4.7% |
| North Potomac | 23,922 | $186,514 | $826,200 | 77.2% | 5.3% |
| Camp Springs | 22,544 | $120,456 | $415,000 | 33.8% | 7.2% |
Population Overview
Arnold is a small city located in Maryland, within Anne Arundel County. The total population is 24,303. It ranks as the 60th most populous out of 527 Census-designated places in Maryland.
Age Demographics
The median age in Arnold is 37.9 years. This is 4% lower than the state median of 39.4 years.
Economy, Income & Housing
The median household income in Arnold is $141,639. This is 37% higher than the state median of $103,678. It is also 75% higher than the national median of $80,734. The poverty rate stands at 3.1%. This is 67% lower than the state poverty rate of 9.4%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 2.5%. This is 48% lower than the state rate of 4.9%. The median home value is $564,200. Housing costs are 34% higher than the state median of $419,900. The home-value-to-income ratio is 4.0x. 86.5% of occupied housing units are owner-occupied. This homeownership rate is 28% higher than the state average of 67.6%.
Race & Ethnicity
The largest racial or ethnic group in Arnold is White (non-Hispanic), making up 76.9% of the population. Hispanic or Latino residents account for 9.7%. The White (non-Hispanic) population is significantly higher than the state average (76.9% vs 46.6%). The Black or African American population (3.8%) is well below the state average of 28.9%.
Education
58.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 34% higher than the state rate of 43.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.0%. Notably, 25.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Arnold, Maryland is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Maryland state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 527 Census-designated places in Maryland. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Arnold, Maryland?
Arnold, Maryland has a population of 24,303 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Arnold, MD?
The median household income in Arnold is $141,639, which is 75% higher than the national median of $80,734.
What is the poverty rate in Arnold, MD?
The poverty rate in Arnold is 3.1%. This means approximately 756 residents live below the federal poverty line.
What is the racial makeup of Arnold, Maryland?
Arnold's population is 76.9% White, 3.8% Black, 9.7% Hispanic/Latino, and 3.3% Asian.
What is the median home value in Arnold, MD?
The median home value in Arnold is $564,200. The home-value-to-income ratio is 4.0x.
How educated is Arnold, Maryland?
58.0% of adults (25+) in Arnold hold a bachelor's degree or higher, and 25.2% hold a graduate or professional degree.