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/CO/WESTMINSTER

Westminster ZIP codes, Colorado

Westminster, CO has 4 ZIP codes (80031, 80030, 80035 and 80036) and area codes 303, 720 and 983. The largest is 80031.

USPS city name
4 ZIP codes
Overlapping the city
8 more
Population
115,484
Area codes
303, 720, 983

NANPA lists no telephone rate centre for Westminster itself, so these are the area codes of the nearest one, Denver (1.7 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Westminster uses the ZIP codes above. 8 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Westminster in numbers

About 115,484 people live in Westminster, in 48,106 households, the 8th-largest of Colorado's 471 census places. The median household income is $100,272 a year, 5% above the Colorado median of $95,470 (US: $80,734). The median owner-occupied home is valued at $532,400 (about the same as the Colorado median), and median gross rent is $1,882 a month. The median age is 37.4; 44.6% of adults 25 and over hold a bachelor's degree or higher (45.7% across Colorado); the average commute takes 27 minutes.

Population115,484Westminster115,484
Households48,106Westminster48,106
Median age37.4Westminster37.4Colorado37.7US 38.9
Median household income$100,272Westminster$100,272Colorado$95,470US $80,734
Median home value$532,400Westminster$532,400Colorado$539,400US $332,700
Median gross rent$1,882Westminster$1,882Colorado$1,761US $1,413
Bachelor's degree or higher44.6%Westminster44.6%Colorado45.7%US 35.7%
Mean commute27.0 minWestminster27.0 minColorado25.2 minUS 26.4 min
Population density3,652 / sq miWestminster3,652 / 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
80031 Westminster , CO Standard 35,584 $107,422 $535,300
80030 Westminster , CO Standard 15,427 $61,092 $439,400
80035 Westminster , CO No street area — — —
80036 Westminster , CO No street area — — —

Other ZIP codes overlapping Westminster

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

ZIP codes overlapping Westminster
ZIP City Type Population Median income Median home
80003 Arvada , CO Standard 35,976 $91,464 $534,700
80005 Arvada , CO Standard 28,459 $136,821 $649,800
80020 Broomfield , CO Standard 54,201 $117,243 $601,800
80021 Broomfield , CO Standard 36,555 $110,038 $568,000
80023 Broomfield , CO Standard 27,143 $158,180 $869,000
80221 Denver , CO Standard 39,718 $86,810 $472,900
80234 Denver , CO Standard 29,356 $92,563 $530,300
80260 Denver , CO Standard 34,677 $61,852 $223,200

Map of Westminster ZIP codes

80031800308003580036

The ZIP codes of Westminster, CO, 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 Arvada (122,634 people, 5.7 mi), Thornton (144,187 people, 6.9 mi) and Denver (718,877 people, 13 mi).

Towns near Westminster
TownPopulationDistance
Shaw Heights 5,565 2.0 mi
Federal Heights 14,125 2.7 mi
Sherrelwood 18,692 4.3 mi
Northglenn 38,014 4.7 mi
Twin Lakes 8,030 5.0 mi
Broomfield 76,304 5.1 mi
Berkley 10,789 5.4 mi
Arvada 122,634 5.7 mi
Welby 16,197 5.8 mi
Superior 13,305 6.3 mi
Thornton 144,187 6.9 mi
Louisville 20,786 7.5 mi
Wheat Ridge 32,070 7.8 mi
Derby 8,453 8.2 mi

More nearby: every ZIP code in Adams County · Colorado ZIP codes

Cite this page

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

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