ZIP code · Castle Rock · Colorado · United States

ZIP code 80108 — Castle Rock

ZIP code 80108 serves Castle Rock, Colorado.

Postal code
80108
Single source Value from one source, not cross-checked.
City
Castle Rock
County
Douglas FIPS 08035
State
Colorado
Country
United States
Coordinates
39.4455, -104.8530 — precision precise (locality)
View on OpenStreetMap
Population
35,485 (ZCTA, ACS 5-year)
Population density
1,006 / sq mi
Land area
35.3 sq mi (91.4 km²) (ZCTA, ACS 5-year)
Median household income
$178,670
Per-capita income
$80,126
Median age
40.2
Households
12,178
Housing units
12,801
Median home value
$813,500
Median gross rent
$1,995 / month
Congressional district
CO-4 (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)

Climate — monthly normals

Warmest month Jul (avg high 86°F), coldest Jan (avg low 18°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F464754596880868477655446
Avg low °F182027334251565547352618
Precip in0.60.71.52.12.02.22.32.51.40.80.80.7

NOAA 1991–2020 climate normals from the nearest station: CASTLE ROCK (3.7 mi) · NOAA NCEI

Places in ZIP 80108

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