Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — CITY/MD/JEFFERSON

Jefferson ZIP code, Maryland

The ZIP code for Jefferson, MD is 21755, and its area codes are 240, 301 and 227.

USPS city name
1 ZIP code
Population
3,314
Area codes
240, 301, 227

NANPA lists no telephone rate centre for Jefferson itself, so these are the area codes of the nearest one, Brunswick (4.3 miles). A town on an area-code boundary can differ from its neighbour.

Jefferson in numbers

About 3,314 people live in Jefferson, in 1,146 households. The median household income is $150,854 a year, 46% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $533,100 (27% above the Maryland median), and median gross rent is $1,379 a month. The median age is 39.4; 47.4% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 29 minutes.

Population3,314Jefferson3,314
Households1,146Jefferson1,146
Median age39.4Jefferson39.4Maryland39.4US 38.9
Median household income$150,854Jefferson$150,854Maryland$103,678US $80,734
Median home value$533,100Jefferson$533,100Maryland$419,900US $332,700
Median gross rent$1,379Jefferson$1,379Maryland$1,705US $1,413
Bachelor's degree or higher47.4%Jefferson47.4%Maryland43.4%US 35.7%
Mean commute29.4 minJefferson29.4 minMaryland31.1 minUS 26.4 min
Population density1,190 / sq miJefferson1,190 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Jefferson CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Jefferson

ZIP codes with the USPS city name Jefferson
ZIP City Type Population Median income Median home
21755 Jefferson , MD Standard 5,909 $137,417 $529,600

Map of Jefferson ZIP codes

21755

The ZIP codes of Jefferson, MD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Jefferson

The nearest larger towns are Middletown (5,014 people, 5.3 mi), Brunswick (8,450 people, 5.6 mi) and Ballenger Creek (26,390 people, 6.5 mi).

Towns near Jefferson
TownPopulationDistance
Braddock Heights 2,892 4.0 mi
Middletown 5,014 5.3 mi
Brunswick 8,450 5.6 mi
Ballenger Creek 26,390 6.5 mi
Frederick 83,395 8.2 mi
Lovettsville, VA 2,719 8.5 mi
Bartonsville 3,282 10.2 mi
Urbana 14,260 11.0 mi
Spring Ridge 5,922 11.1 mi
Boonsboro 3,809 12.0 mi
Walkersville 6,414 12.1 mi
Linganore 14,444 13.2 mi
Monrovia 3,568 14.2 mi
Green Valley 13,602 16.1 mi

More nearby: every ZIP code in Frederick County · Maryland ZIP codes

Cite this page

zipcodes.pro. “Jefferson, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/jefferson

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