Great Mills, MD zip code
Great Mills, Maryland uses one zip code: 20634. Most of it is in St. Mary's County. Together these zip codes are home to about 7.1K people.
Zip codes
1
Population
7.1K
All zips combined
Largest zip
20634
7,088 residents
Zip codes in Great Mills
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 20634 | 7,088 | $139,375 |