US ZIP Code Map
Loading ZIP borders…

Layers

ZIP code

81101

Alamosa, CO

STANDARD

81101 covers Alamosa in Alamosa County, with 15,454 people in the ACS 2023 estimate.

Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology

ACS 2023 population

15,454

Median household income

$50,020

Median home value

$216,900

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 81101. Methodology

ZIP code map of 81101

Census ZCTA boundary for ZIP 81101 in Alamosa, Colorado
Census ZCTA boundary for ZIP 81101 in Alamosa, Colorado. A ZCTA is not the same as a USPS ZIP code. Boundaries: U.S. Census Bureau. Methodology · Data sources
Download PNG

About ZIP code 81101

Type

STANDARD

City

Alamosa

County

Alamosa County

Timezone

America/Denver

Area codes

719

Land area

369.0 sq mi

Water area

0.54 sq mi

Households

6,739

Median gross rent

$908

Acceptable cities: Great Sand Dunes National Mo, Sand Dunes Mo

More enterprise fields

Timezone
America/Denver
Area Codes
719
World Region
NA
Country
US

Commercial ZIP directory · not ACS

Commercial ZIP directory population_count for ZCTA 81101. Not ACS. Methodology

People in 81101

Race

  • White9,573
  • Black or African American249
  • American Indian or Alaska Native687
  • Asian180
  • Native Hawaiian and Pacific Islander17
  • Other race2,175
  • Two or more races2,776

Hispanic or Latino (any race): 7,546

Age

  • Under 102,003
  • 10 to 192,376
  • 20 to 292,437
  • 30 to 392,087
  • 40 to 491,583
  • 50 to 591,705
  • 60 to 691,855
  • 70 to 791,084
  • 80 and older527

Income and housing in 81101

Poverty rate

19.2%

Median earnings

$29,138

Median household income

$50,020

Median home value

$216,900

Median gross rent

$908

Education

  • High school graduate88.8%
  • Bachelor's degree29.2%
  • Graduate degree11.9%

Places covering 81101

Cities and places — Population overlap

Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

Counties — Population overlap

Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.

ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

28.1% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 81101

IRS populationACS population
16,9348,467020052023

Hover the chart or read the table below (Year | ACS | IRS).

Population history. Year | ACS population | IRS population. ACS and IRS are separate series. Blank cells mean that source did not publish a count for the year.
YearACS populationIRS population
200511,695
200611,340
200712,559
200811,635
200911,816
201012,153
201114,59712,291
201214,87312,030
201315,04811,930
201415,33012,020
201515,56912,170
201615,68012,150
201715,56812,250
201815,47712,230
201915,15312,590
202015,01412,510
202115,11012,510
202215,24512,630
202315,454

ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.

ZIP codes near 81101

12 nearest ZIP centroids (any distance)

  1. 81146Mosca15.9 miPop 779 · Income $69,138
  2. 81123Blanca16.2 miPop 726 · Income $37,173
  3. 81144Monte Vista16.8 miPop 6,677 · Income $61,554
  4. 81136Hooper17.4 miPop 318 · Income $53,482
  5. 81151Sanford17.7 miPop 1,445 · Income $39,542
  6. 81124Capulin18.9 miPop 332 · Income $87,204
  7. 81140La Jara20.6 miPop 1,973 · Income $46,211
  8. 81141Manassa21.4 miPop 1,195 · Income $56,953
  9. 81148Romeo21.8 miPop 368 · Income $42,188
  10. 81129Conejos26.8 miPop 144 · Income —
  11. 81125Center26.9 miPop 3,526 · Income $51,667
  12. 81133Fort Garland28.8 miPop 1,056 · Income $55,179

ZIP centroids within 2 miles

No other ZIP codes within 2 miles of 81101, measured by Census internal-point centroids. Try a wider radius.

ZIPs within 2 miles of this place

Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.

81101 Alamosa, CO

Looking up ZIP codes within 2 miles of 81101 Alamosa, CO, measured by centroid distance.

Selected —

ACS population

—

Households

—

Avg median income

—

Avg median home

—

Selected ZIP codes

One ZIP code per line. Leading zeros preserved.

ZIP code 81101 FAQ

What city is ZIP code 81101 in?
81101 is in Alamosa, CO.
What county is 81101 in?
81101 is in Alamosa County.
What is the median household income in 81101?
The median household income in 81101 is $50,020.
Which ZIP codes are near 81101?
Use the radius tool on this page to list ZIP codes within a chosen distance of 81101.