Calvert County, Maryland
Calvert County is a county in Maryland. Its county FIPS code is 24009. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 24009
- Representative coordinates
- 38.522719, -76.529762
- County type
- County
- County seat or government
- Prince Frederick
- Resident population, July 2025
- 94,484
- Land area
- 552.159 km²
- Water area
- 341.581 km²
- State
- Maryland
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Calvert County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
20615 · 20629 · 20639 · 20657 · 20676 · 20678 · 20685 · 20688 · 20689 · 20714 · 20732 · 20736 · 20754 · 20758
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.