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/JAMESTOWN

Jamestown ZIP code, Colorado

The ZIP code for Jamestown, CO is 80455, and its area codes are 720, 303 and 983.

USPS city name
1 ZIP code
Population
324
Area codes
720, 303, 983

NANPA lists no telephone rate centre for Jamestown itself, so these are the area codes of the nearest one, Longmont (11.1 miles). A town on an area-code boundary can differ from its neighbour.

Jamestown in numbers

About 324 people live in Jamestown, in 138 households. The median household income is $149,375 a year, 56% above the Colorado median of $95,470 (US: $80,734). The median owner-occupied home is valued at $595,900 (10% above the Colorado median), and median gross rent is $1,234 a month. The median age is 45.8; 57.6% of adults 25 and over hold a bachelor's degree or higher (45.7% across Colorado); the average commute takes 34 minutes.

Population324Jamestown324
Households138Jamestown138
Median age45.8Jamestown45.8Colorado37.7US 38.9
Median household income$149,375Jamestown$149,375Colorado$95,470US $80,734
Median home value$595,900Jamestown$595,900Colorado$539,400US $332,700
Median gross rent$1,234Jamestown$1,234Colorado$1,761US $1,413
Bachelor's degree or higher57.6%Jamestown57.6%Colorado45.7%US 35.7%
Mean commute33.8 minJamestown33.8 minColorado25.2 minUS 26.4 min
Population density564 / sq miJamestown564 / sq mi

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

ZIP codes addressed as Jamestown

ZIP codes with the USPS city name Jamestown
ZIP City Type Population Median income Median home
80455 Jamestown , CO Standard 501 $169,286 $622,400

Map of Jamestown ZIP codes

80455

The ZIP codes of Jamestown, 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 Jamestown

The nearest larger towns are Lazy Acres (778 people, 4.0 mi), Sunshine (330 people, 4.3 mi) and Altona (587 people, 5.1 mi).

Towns near Jamestown
TownPopulationDistance
Boulder 106,433 10.1 mi
Gunbarrel 10,051 12.4 mi
Niwot 3,447 12.5 mi
Longmont 99,406 15.8 mi
Louisville 20,786 16.9 mi
Lafayette 30,602 17.9 mi
Superior 13,305 18.1 mi
Estes Park 5,844 18.4 mi
Erie 33,808 19.6 mi
Broomfield 76,304 21.6 mi
Frederick 16,651 22.2 mi
Mead 5,919 22.5 mi
Firestone 18,049 23.6 mi
Arvada 122,634 23.8 mi

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

Cite this page

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

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