Find the last 4 digits (ZIP+4) for an address in 81123

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ZIP Code 81123 – Blanca, CO

Blanca, Colorado · Costilla County · Mountain time

ZIP code81123
CityBlanca
StateColorado
CountyCostilla County
Population606
Time zoneMountain · local time
ZIP typeStandard (has a Census ZCTA area)
Land area145.65 sq mi
Center (lat, long)37.4112, -105.5657

Area codes in this area

719

These are the area codes that most often serve ZIP 81123 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

81133 Fort Garland · 13.3 mi81151 Sanford · 14.3 mi81101 Alamosa · 16.2 mi81146 Mosca · 17.2 mi81102 Alamosa · 17.9 mi81126 Chama · 21 mi81152 San Luis · 21.2 mi81055 La Veta · 24.6 mi

About ZIP 81123

ZIP code 81123 is assigned to Blanca, Colorado. It lies in Costilla County. Its Census area covers about 145.65 square miles of land. The closest neighboring ZIP is 81133 (Fort Garland), about 13.3 miles away.

Every address in 81123 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources