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/ALMA

Alma ZIP code, Colorado

The ZIP code for Alma, CO is 80420.

USPS city name
1 ZIP code
Population
385

Alma in numbers

About 385 people live in Alma, in 236 households. The median owner-occupied home is valued at $423,900 (21% below the Colorado median), and median gross rent is $2,155 a month. The median age is 34.1; 40.9% of adults 25 and over hold a bachelor's degree or higher (45.7% across Colorado); the average commute takes 26 minutes.

Population385Alma385
Households236Alma236
Median age34.1Alma34.1Colorado37.7US 38.9
Median home value$423,900Alma$423,900Colorado$539,400US $332,700
Median gross rent$2,155Alma$2,155Colorado$1,761US $1,413
Bachelor's degree or higher40.9%Alma40.9%Colorado45.7%US 35.7%
Mean commute26.3 minAlma26.3 minColorado25.2 minUS 26.4 min
Population density887 / sq miAlma887 / sq mi

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

ZIP codes addressed as Alma

ZIP codes with the USPS city name Alma
ZIP City Type Population Median income Median home
80420 Alma , CO Standard 1,246 $86,705 $616,000

Map of Alma ZIP codes

80420

The ZIP codes of Alma, 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 Alma

The nearest larger towns are Fairplay (1,067 people, 5.7 mi), Blue River (1,410 people, 11 mi) and Leadville (2,620 people, 12 mi).

Towns near Alma
TownPopulationDistance
Leadville 2,620 12.3 mi
Breckenridge 4,959 14.8 mi
Frisco 2,825 20.2 mi
Silverthorne 4,815 25.8 mi
Vail 4,613 28.9 mi

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

Cite this page

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

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