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/WINDSOR

Windsor ZIP codes, Colorado

Windsor, CO has 2 ZIP codes (80550 and 80551) and area code 970. The largest is 80550.

USPS city name
2 ZIP codes
Overlapping the city
2 more
Population
37,914
Area code
970

Mail addressed to Windsor uses the ZIP codes above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Windsor in numbers

About 37,914 people live in Windsor, in 14,889 households, the 24th-largest of Colorado's 471 census places. The median household income is $127,028 a year, 33% above the Colorado median of $95,470 (US: $80,734). The median owner-occupied home is valued at $604,000 (12% above the Colorado median), and median gross rent is $1,793 a month. The median age is 40.9; 55.5% of adults 25 and over hold a bachelor's degree or higher (45.7% across Colorado); the average commute takes 26 minutes.

Population37,914Windsor37,914
Households14,889Windsor14,889
Median age40.9Windsor40.9Colorado37.7US 38.9
Median household income$127,028Windsor$127,028Colorado$95,470US $80,734
Median home value$604,000Windsor$604,000Colorado$539,400US $332,700
Median gross rent$1,793Windsor$1,793Colorado$1,761US $1,413
Bachelor's degree or higher55.5%Windsor55.5%Colorado45.7%US 35.7%
Mean commute26.4 minWindsor26.4 minColorado25.2 minUS 26.4 min
Population density1,441 / sq miWindsor1,441 / sq mi

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

ZIP codes addressed as Windsor

ZIP codes with the USPS city name Windsor
ZIP City Type Population Median income Median home
80550 Windsor , CO Standard 46,456 $126,132 $582,000
80551 Windsor , CO No street area — — —

Other ZIP codes overlapping Windsor

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

ZIP codes overlapping Windsor
ZIP City Type Population Median income Median home
80528 Fort Collins , CO Standard 24,960 $130,350 $705,000
80631 Greeley , CO Standard 53,722 $54,591 $336,600

Map of Windsor ZIP codes

8055080551

The ZIP codes of Windsor, 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 Windsor

The nearest larger towns are Greeley (110,806 people, 8.6 mi), Loveland (78,410 people, 8.9 mi) and Fort Collins (170,229 people, 9.2 mi).

Towns near Windsor
TownPopulationDistance
Severance 10,130 3.3 mi
Timnath 8,941 4.6 mi
Greeley 110,806 8.6 mi
Loveland 78,410 8.9 mi
Fort Collins 170,229 9.2 mi
Eaton 5,867 11.1 mi
Johnstown 18,883 11.8 mi
Milliken 8,871 12.0 mi
Evans 22,396 12.5 mi
Berthoud 12,411 13.6 mi
La Salle 3,061 14.2 mi
Wellington 11,798 16.1 mi
Mead 5,919 17.8 mi
Platteville 2,928 18.2 mi

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

Cite this page

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

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