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ZIP codes

ZIP codes in Charles County, Maryland

Charles County has 25 ZIP codes. 20 lie entirely inside it and 5 are shared with neighboring counties, so part of their land and their people are elsewhere. About 167,628 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes
25
With 1% or more of their land inside
Entirely inside
20
99% or more of their land
Shared with other counties
5
Most with Prince George's County (3)
Most populated ZIP
20603
31,844 people · Bensville
Least populated ZIP
20612
148 people · Benedict; 1 more with nobody living there
Largest ZIP by land
20646
80 sq mi · La Plata

Map of the ZIP codes in Charles County

Calvert County Prince George's County St. Mary's County Fairfax County, VA King George County, VA Prince William County, VA Stafford County, VA Westmoreland County, VA 20601 · Waldorf · 26,945 people · 84% in the county 20602 · Waldorf · 28,331 people · 100% in the county 20603 · Bensville · 31,844 people · 100% in the county 20607 · Accokeek · 13,750 people · 3.6% in the county 20611 · 1,219 people · 100% in the county 20612 · Benedict · 148 people · 100% in the county 20613 · Baden · 17,590 people · 8.3% in the county 20616 · Bryans Road · 8,057 people · 100% in the county 20617 · Bryantown · 334 people · 100% in the county 20622 · Charlotte Hall · 5,185 people · 83% in the county 20625 · Cobb Island · 849 people · 100% in the county 20632 · 485 people · 100% in the county 20637 · Hughesville · 6,133 people · 100% in the county 20640 · Bryans Road · 10,685 people · 100% in the county 20645 · 814 people · 100% in the county 20646 · La Plata · 21,400 people · 100% in the county 20658 · 866 people · 100% in the county 20659 · Mechanicsville · 24,324 people · 4.1% in the county 20661 · Cobb Island · 0 people · 100% in the county 20662 · 2,129 people · 100% in the county 20664 · Rock Point · 3,138 people · 100% in the county 20675 · Pomfret · 1,796 people · 100% in the county 20677 · Port Tobacco Village · 2,088 people · 100% in the county 20693 · 1,496 people · 100% in the county 20695 · Waldorf · 16,407 people · 100% in the county
  • Entirely in the county (99% or more of its land)
  • Shared, mostly in this county
  • Shared, mostly in other counties
  • Neighboring counties
Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Charles County

25 ZIP codes in Charles County, MD, by number
ZIP code Main city Population Land in the county Residents in the county
20601 Waldorf 26,945 84% ≈ 22,819
20602 Waldorf 28,331 100% 28,331
20603 Bensville 31,844 100% 31,844
20607 Accokeek 13,750 3.6% ≈ 794
20611 — 1,219 100% 1,219
20612 Benedict 148 100% 148
20613 Baden 17,590 8.3% ≈ 1,669
20616 Bryans Road 8,057 100% 8,057
20617 Bryantown 334 100% 334
20622 Charlotte Hall 5,185 83% ≈ 3,625
20625 Cobb Island 849 100% 849
20632 — 485 100% 485
20637 Hughesville 6,133 100% 6,133
20640 Bryans Road 10,685 100% 10,685
20645 — 814 100% 814
20646 La Plata 21,400 100% 21,400
20658 — 866 100% 866
20659 Mechanicsville 24,324 4.1% ≈ 502
20661 Cobb Island 0 100% 0
20662 — 2,129 100% 2,129
20664 Rock Point 3,138 100% 3,138
20675 Pomfret 1,796 100% 1,796
20677 Port Tobacco Village 2,088 100% 2,088
20693 — 1,496 100% 1,496
20695 Waldorf 16,407 100% 16,407

ZIP codes shared with other counties

These 5 ZIP codes have part of their land in another county. The first figure is the share of their land in Charles County; then, where the rest lies.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Waldorf (3), Bryans Road (2), Cobb Island (2), Accokeek (1), Baden (1), and Benedict (1); 15 places in all.

All 25 start with the same three digits, 206: the prefix of the USPS sorting center that handles them.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

  • U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
  • U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
  • U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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