Alamosa, CO 81101 ZIP Code Profile

Related Place Profiles:
Alamosa, CO | Estrella, CO | Henry, CO | Waverly, CO

ZIP Code 81101: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Alamosa, CO 81101

Acceptable Alternative
Great Sand Dunes National Mo, CO 81101
Sand Dunes Mo, CO 81101

Not Acceptable, USPS
Carmel, CO 81101
East Alamosa, CO 81101
Estrella, CO 81101
Henry, CO 81101
Stanley, CO 81101
Washington, CO 81101
Waverly, CO 81101

  • ZIP Code Type: STANDARD
  • County: Alamosa County
  • Centroid: Latitude 37.473, Longitude -105.867
  • Time Zone: Mountain Time Zone (UTC -7 hours)
  • Observes DST: Yes

ZIP Code 81101 has segments in 2 Counties (Alamosa, Conejos).

  • Businesses Addresses: 892
  • PO Box Addresses: 818
  • Residential Addresses: 6,194
    • Multi-Family Addresses: 75
    • Single Family Addresses: 6,119

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


81101 ZIP Code Map

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Alamosa, CO 81101 Data & Demographics (As of July 1, 2017)


Total Population 16,043
Daytime Population: Workers 9,296
Daytime Population: Residents 9,300
Total Daytime Population (TDP) 18,596
Ratio TDP/Total Population1 1.16
Population in Households 14,770
Population in Familes 11,571
Population in Group Qrtrs 1,273
Population Density2 48
Diversity Index3 73


Median Household Income $37,237
Average Household Income $50,966
Per Capita Income $20,128


Total Housing Units 6,465 (100%)
Owner Occupied HU 3,381 (52.3%)
Renter Occupied HU 2,594 (40.1%)
Vacant Housing Units 490 ( 7.6%)
Median Home Value $145,421
Average Home Value $172,789


Total Households 5,975
Average Household Size 2.47
Family Households 3,734
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2017 2017-2022
Population 1.4% 0.76%
Households 0.89% 0.76%
Families 0.83% 0.72%
Median Household Income   1.86%
Per Capita Income   1.95%

Alamosa, CO 81101 - Peer Comparisons by Rank and Percentile

The table below compares 81101 to the other 503 ZIP Codes in Colorado by rank and percentile using July 1, 2017 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 # 136 73rd
Population Density # 215 57th
Diversity Index # 32 93rd
Median Household Income # 452 10th
Per Capita Income # 459 9th

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

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