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

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MD/WILLIAMSPORT

Williamsport ZIP code, Maryland

The ZIP code for Williamsport, MD is 21795, and its area codes are 240 and 301.

USPS city name
1 ZIP code
Population
1,949
Area codes
240, 301

Williamsport in numbers

About 1,949 people live in Williamsport, in 973 households. The median household income is $61,607 a year, 41% below the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $227,900 (46% below the Maryland median), and median gross rent is $1,262 a month. The median age is 41.9; 21.4% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 22 minutes.

Population1,949Williamsport1,949
Households973Williamsport973
Median age41.9Williamsport41.9Maryland39.4US 38.9
Median household income$61,607Williamsport$61,607Maryland$103,678US $80,734
Median home value$227,900Williamsport$227,900Maryland$419,900US $332,700
Median gross rent$1,262Williamsport$1,262Maryland$1,705US $1,413
Bachelor's degree or higher21.4%Williamsport21.4%Maryland43.4%US 35.7%
Mean commute22.4 minWilliamsport22.4 minMaryland31.1 minUS 26.4 min
Population density1,983 / sq miWilliamsport1,983 / sq mi

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

ZIP codes addressed as Williamsport

ZIP codes with the USPS city name Williamsport
ZIP City Type Population Median income Median home
21795 Williamsport , MD Standard 10,144 $87,864 $295,800

Map of Williamsport ZIP codes

21795

The ZIP codes of Williamsport, 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 Williamsport

The nearest larger towns are Halfway (10,849 people, 2.8 mi), St. James (4,824 people, 4.1 mi) and Falling Waters, WV (2,183 people, 4.4 mi).

Towns near Williamsport
TownPopulationDistance
Halfway 10,849 2.8 mi
St. James 4,824 4.1 mi
Hagerstown 43,665 5.9 mi
Maugansville 3,624 7.6 mi
Fountainhead-Orchard Hills 6,567 8.2 mi
Robinwood 8,042 8.5 mi
Paramount-Long Meadow 2,569 8.8 mi
Boonsboro 3,809 10.1 mi
State Line, PA 3,111 10.6 mi
Martinsburg, WV 18,904 12.9 mi
Smithsburg 3,115 13.3 mi
Greencastle, PA 4,222 14.2 mi
Waynesboro, PA 11,047 16.5 mi
Wayne Heights, PA 3,293 17.8 mi

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

Cite this page

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

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