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/WILLISTON

Williston ZIP codes, Maryland

No ZIP code is named for Williston, MD; addresses there use a neighbouring town's name. The ZIP code covering it is 21629. Its area codes are 667, 410 and 443.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
391
Area codes
667, 410, 443

NANPA lists no telephone rate centre for Williston itself, so these are the area codes of the nearest one, Denton (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Williston in numbers

About 391 people live in Williston, in 141 households. The median household income is $129,479 a year, 25% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $532,700 (27% above the Maryland median). The median age is 33.2; 24.1% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland).

Population391Williston391
Households141Williston141
Median age33.2Williston33.2Maryland39.4US 38.9
Median household income$129,479Williston$129,479Maryland$103,678US $80,734
Median home value$532,700Williston$532,700Maryland$419,900US $332,700
Bachelor's degree or higher24.1%Williston24.1%Maryland43.4%US 35.7%
Population density1,487 / sq miWilliston1,487 / sq mi

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

ZIP codes covering Williston

These ZIP codes cover part of Williston but are addressed as somewhere else.

ZIP codes overlapping Williston
ZIP City Type Population Median income Median home
21629 Denton , MD Standard 10,252 $73,956 $334,200

Map of Williston ZIP codes

21629

The ZIP codes of Williston, 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 Williston

The nearest larger towns are Denton (4,936 people, 3.7 mi), Cordova (448 people, 8.3 mi) and Ridgely (1,772 people, 8.6 mi).

Towns near Williston
TownPopulationDistance
Denton 4,936 3.7 mi
Greensboro 2,634 10.4 mi
Federalsburg 2,837 10.4 mi
Easton 17,308 12.4 mi
Hurlock 2,819 14.2 mi
Bridgeville, DE 2,745 15.2 mi
Harrington, DE 3,838 16.4 mi
Seaford, DE 8,485 17.5 mi
Centreville 4,761 18.5 mi
Grasonville 3,564 20.6 mi
Riverview, DE 2,596 22.6 mi
Cambridge 13,152 22.6 mi
Laurel, DE 4,152 23.4 mi
Milford, DE 12,803 23.7 mi

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

Cite this page

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

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