81120 ZIP Code Profile, Map, Data & Demographics


ZIP Code 81120: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Antonito, CO 81120

Not Acceptable, USPS
Espinoza, CO 81120
Florida, CO 81120
Fox Creek, CO 81120
La Isla, CO 81120
Las Mesitas, CO 81120
Lobatos, CO 81120
Los Pinas, CO 81120
Mogote, CO 81120
Ortiz, CO 81120
Paisaje, CO 81120
San Antonio, CO 81120
San Miguel, CO 81120
San Rafeal, CO 81120
Track City, CO 81120

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  • ZIP Code Type: STANDARD
  • County: Conejos County
  • Centroid: Latitude 37.073, Longitude -106.247
  • Time Zone: Mountain Time Zone (UTC -7 hours)
  • Observes DST: Yes
  • Businesses Addresses: 55
  • PO Box Addresses: 553
  • Residential Addresses: 543
    • Multi-Family Addresses: 0
    • Single Family Addresses: 543

The ZIP Code maps and database are updated 4 times per year.
Database updated: July 1, 2022, Maps updated: May 5, 2022.


Antonito, CO 81120 Data & Demographics (As of July 1, 2021)


Total Population 2,645 (100%)
Population in Households 2,617 (98.9%)
Population in Families 2,161 (81.7%)
Population in Group Quarters1 28 ( 1.1%)
Population Density 4
Diversity Index2 73


Median Household Income $30,309
Average Household Income $42,520
% of Income for Mortgage4 14%
Per Capita Income $17,572
Wealth Index5 34


Total HU (Housing Units) 1,793 (100%)
Owner Occupied HU 857 (47.8%)
Renter Occupied HU 235 (13.1%)
Vacant Housing Units 701 (39.1%)
Median Home Value $103,324
Average Home Value $162,865
Housing Affordability Index3 186


Total Households 1,092
Average Household Size 2.4
Family Households 713
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2021 2021-2026
Population 0.34% 0.3%
Households 0.36% 0.33%
Families 0.27% 0.28%
Median Household Income   0.78%
Per Capita Income   1.69%
Owner Occupied HU   0.53%

Antonito, CO 81120 - Peer Comparisons by Rank and Percentile

The table below compares 81120 to the other 516 ZIP Codes in Colorado by rank and percentile using July 1, 2021 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 273 47th
Population Density # 382 26th
Median Household Income # 504 3rd
Housing Affordability Index # 470 91st
Per Capita Income # 499 3rd
Diversity Index # 41 92nd

Additional comparisons and rankings can be made with a VERY EASY TO USE Colorado Census Data Comparison Tool.

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