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/WESTMINSTER

Westminster ZIP codes, Maryland

Westminster, MD has 2 ZIP codes (21157 and 21158) and area codes 443, 410 and 667. The largest is 21157.

USPS city name
2 ZIP codes
Population
20,445
Area codes
443, 410, 667

Westminster in numbers

About 20,445 people live in Westminster, in 7,949 households. The median household income is $86,219 a year, 17% below the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $337,600 (20% below the Maryland median), and median gross rent is $1,476 a month. The median age is 38.5; 36.3% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 29 minutes.

Population20,445Westminster20,445
Households7,949Westminster7,949
Median age38.5Westminster38.5Maryland39.4US 38.9
Median household income$86,219Westminster$86,219Maryland$103,678US $80,734
Median home value$337,600Westminster$337,600Maryland$419,900US $332,700
Median gross rent$1,476Westminster$1,476Maryland$1,705US $1,413
Bachelor's degree or higher36.3%Westminster36.3%Maryland43.4%US 35.7%
Mean commute28.5 minWestminster28.5 minMaryland31.1 minUS 26.4 min
Population density3,023 / sq miWestminster3,023 / sq mi

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

ZIP codes addressed as Westminster

ZIP codes with the USPS city name Westminster
ZIP City Type Population Median income Median home
21157 Westminster , MD Standard 38,984 $104,966 $424,100
21158 Westminster , MD Standard 22,083 $109,827 $384,700

Map of Westminster ZIP codes

2115721158

The ZIP codes of Westminster, 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 Westminster

The nearest larger towns are Eldersburg (31,695 people, 12 mi), Reisterstown (25,582 people, 13 mi) and Owings Mills (37,245 people, 16 mi).

Towns near Westminster
TownPopulationDistance
Manchester 5,439 8.2 mi
Hampstead 6,251 8.4 mi
Taneytown 7,932 10.2 mi
Littlestown, PA 4,850 12.2 mi
Eldersburg 31,695 12.4 mi
Reisterstown 25,582 13.3 mi
Parkville, PA 8,128 14.4 mi
Sykesville 4,491 14.4 mi
McSherrystown, PA 3,114 15.5 mi
Hanover, PA 16,584 16.1 mi
Mount Airy 9,805 16.2 mi
Owings Mills 37,245 16.4 mi
Randallstown 35,957 18.0 mi
Garrison 9,469 18.3 mi

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

Cite this page

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

Underlying data is public domain or openly licensed — sources, vintages and licences.