Arnold, Maryland ZIP Codes
1 ZIP codes | Population: 22,570
| ZIP Code | Population | Median Income | Median Home | Median Age |
|---|---|---|---|---|
| 21012 | 22,570 | $139,432 | $563,800 | 38.00 |
1 ZIP codes | Population: 22,570
| ZIP Code | Population | Median Income | Median Home | Median Age |
|---|---|---|---|---|
| 21012 | 22,570 | $139,432 | $563,800 | 38.00 |