Arnold, MD zip code
Arnold, Maryland uses one zip code: 21012. Most of it is in Anne Arundel County. Together these zip codes are home to about 23K people.
Zip codes
1
Population
23K
All zips combined
Largest zip
21012
22,570 residents
Zip codes in Arnold
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 21012 | 22,570 | $139,432 |