ZIP code · Jamestown · Colorado · United States

ZIP code 80455 — Jamestown

ZIP code 80455 serves Jamestown, Colorado.

Postal code
80455
Single source Value from one source, not cross-checked.
City
Jamestown
County
Boulder FIPS 08013
State
Colorado
Country
United States
Coordinates
40.1155, -105.3886 — precision precise (locality)
View on OpenStreetMap
Population
378 (ZCTA, ACS 5-year)
Population density
12 / sq mi
Land area
32.3 sq mi (83.7 km²) (ZCTA, ACS 5-year)
Median household income
$175,438
Per-capita income
$83,667
Median age
48.1
Households
169
Housing units
228
Median home value
$535,700
Median gross rent
$1,208 / month
Congressional district
CO-2 (119th Congress)
USDA hardiness zone
5b (-15 to -10 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Denver (UTC−7 / UTC−6 DST)
Area codes
720, 303, 983 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 68°F), coldest Feb (avg low 12°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F292836405062686659473528
Avg low °F121217222936434134261912
Precip in2.72.83.74.83.81.93.02.52.02.22.32.1

NOAA 1991–2020 climate normals from the nearest station: BOULDER 14 W (9.8 mi) · NOAA NCEI

Places in ZIP 80455

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page