County ZIP codes · Maryland · FIPS 24009
Calvert County, MD ZIP Codes
Calvert County, Maryland has 15 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 14 residential and 1 for PO boxes or a single organization. 12 of the residential ones lie mainly in Calvert County and 2 mainly in a neighboring county; 4 cross the county line. Median household income ranges from $91,099 in 20714 (North Beach) to $167,371 in 20754 (Dunkirk) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Calvert County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $119,135 and $159,851.
They carry 14 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 14 residential ZIP codes in Calvert County
12 ZIP codes lie mainly in Calvert County; 2 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 20657 | Lusby | 20,699 | 693 | $116k | $334k | 100% |
| 20639 | Huntingtown | 15,544 | 374 | $161k | $555k | 100% |
| 20678 | Prince Frederick | 12,752 | 284 | $126k | $455k | 100% |
| 20732 | Chesapeake Beach | 10,722 | 962 | $140k | $449k | 100% |
| 20736 | Owings | 9,960 | 403 | $160k | $568k | 97% |
| 20754 | Dunkirk | 7,545 | 471 | $167k | $614k | 83% |
| 20685 | Saint Leonard | 6,866 | 300 | $119k | $450k | 100% |
| 20676 | Port Republic | 3,218 | 223 | $157k | $510k | 100% |
| 20689 | Sunderland | 1,809 | 235 | $162k | $491k | 100% |
| 20688 | Solomons | 1,290 | 1,120 | $103k | $619k | 100% |
| 20629 | Dowell | 1,150 | 1,371 | $87k | $403k | 100% |
| 20615 | Broomes Island | 460 | 633 | – | $390k | 100% |
Partly in Calvert County
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
4 ZIP codes of Calvert County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Calvert | Elsewhere |
|---|---|---|
| 20736 | 97% | Anne Arundel County 3% |
| 20754 | 83% | Anne Arundel County 17% |
| 20714 | 36% | Anne Arundel County 64% |
| 20758 | 3% | Anne Arundel County 98% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 20610 | Barstow |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Calvert County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Calvert County's ZIP codes use 2 prefixes: 206 and 207.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.