ZIP code · Antonito · Colorado · United States

ZIP code 81120 — Antonito

ZIP code 81120 serves Antonito, Colorado.

Postal code
81120
Single source Value from one source, not cross-checked.
City
Antonito
County
Conejos FIPS 08021
State
Colorado
Country
United States
Coordinates
37.0855, -106.0379 — precision precise (locality)
View on OpenStreetMap
Population
1,976 (ZCTA, ACS 5-year)
Population density
2 / sq mi
Land area
893.5 sq mi (2,314.2 km²) (ZCTA, ACS 5-year)
Median household income
$39,423
Per-capita income
$29,960
Median age
49
Households
930
Housing units
1,609
Median home value
$134,800
Median gross rent
$803 / month
Congressional district
CO-3 (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 code
719
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 81°F), coldest Jan (avg low 5°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F354153606979817973634936
Avg low °F5132128374449474028176
Precip in0.20.20.40.50.60.41.11.61.10.70.50.4

NOAA 1991–2020 climate normals from the nearest station: MANASSA (8.0 mi) · NOAA NCEI

Places in ZIP 81120

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