Secretary, MD zip code
Secretary, Maryland uses one zip code: 21664. Most of it is in Dorchester County. Together these zip codes are home to about 635 people.
Zip codes
1
Population
635
All zips combined
Largest zip
21664
635 residents
Zip codes in Secretary
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 21664 | 635 | $82,721 |