St. Mary's County, Maryland
St. Mary's County profile, demographic data, and geographic information.
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 116,469 (2024)
ID: 208243
|
County | Official County Government |
Contact: ACCOUNTING OFFICER
PO BOX 653, LEONARDTOWN MD 20650-0653
|
|
GUS Population: 5,041 (2024)
ID: 212029
|
Municipal | Municipal Government Within County |
Contact: PLANNING & ZONNING ASSISTANT
PO BOX 1, LEONARDTOWN MD 20650-0001
|