81101 ZIP Code — Alamosa, CO

Alamosa County, Colorado

ZIP code 81101 is located in Alamosa, Colorado, within Alamosa County. It covers approximately 369.00 square miles and serves a population of 15,245 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 719.

About ZIP code 81101

The housing stock consists of a mix of housing types. Most homes were built in the 1990s, giving the area an established character. Median home value is $197,800. Owner-occupancy sits near the national average at 57%.

Median household income is $52,125. SNAP benefit usage at 26% of households reflects economic stress in the area. 32% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 15 minutes is near the national average.

Educational attainment is near the national average, with 28% of residents holding a bachelor's degree or higher.

Overall, ZIP code 81101 reflects a community defined by a significant Social Security-dependent population and elevated reliance on food assistance.

15,245

population

369.00

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

81101 ZIP code map

Cities in ZIP code 81101

Below are the cities the US Postal Service accepts for ZIP code 81101. Using any city not on this list may result in mail delivery delays.

City	Status
Alamosa	Acceptable
Alamosa	Preferred

Nearby ZIP codes

81102 Alamosa (6 mi) 81123 Blanca (10.7 mi) 81146 Mosca (12.6 mi) 81151 Sanford (16.4 mi) 81136 Hooper (18 mi) 81140 La Jara (19.7 mi)

Demographics updated 05/2026

Population
Total population	15,245
Population density	41 / sq mi
State FIPS	08
County FIPS	003

Geography
Land area	369.00 sq mi
Water area	0.54 sq mi
Latitude	37.4553
Longitude	-105.7715
Timezone	Mountain (MT)
Area code	719

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	62.0%	60.2%	32.5%
$50k – $100k	24.1%	24.5%	31.0%
$100k – $200k	11.2%	12.7%	26.9%
Over $200k	2.7%	2.6%	9.6%

Demographics & statistics

15,245

Population

People per sq mi

32.6

Median age

$52,125

Median household income

$28,704

Per capita income

$197,800

Median home value

$824

Median monthly rent

56.6%

Home ownership

16.4%

Poverty rate

3.3%

Unemployment

3,985

Housing units

28.1%

Bachelor's or higher

Age distribution

Male Female

458

Under 5

473

547

5–9

565

490

10–14

507

764

15–19

789

756

20–24

781

1,050

25–34

1,084

881

35–44

911

663

45–54

685

350

55–59

362

470

60–64

485

730

65–74

754

240

75–84

248

85+

103

← Male

Female →

Age summary

Group	Count	%
Under 18	3,625	23.8%
18 and over	11,620	76.2%
65 and over	2,174	14.3%
Median age	32.6 years

Race & ethnicity

White 54.5%

Hispanic or Latino 17.9%

Two or more races 14.6%

Other race 6.1%

American Indian / Alaska Native 3.8%

Asian 1.9%

Black or African American 1%

Native Hawaiian / Pacific Islander 0.2%

Group	Count	%
White	10,116	54.5%
Hispanic or Latino	3,315	17.9%
Two or more races	2,716	14.6%
Other race	1,127	6.1%
American Indian / Alaska Native	713	3.8%
Asian	352	1.9%
Black or African American	177	1%
Native Hawaiian / Pacific Islander	44	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	62.0%	60.2%	32.5%
$50k – $100k	24.1%	24.5%	31.0%
$100k – $200k	11.2%	12.7%	26.9%
Over $200k	2.7%	2.6%	9.6%

Under $10k 4.7%

$10k–$15k 6.8%

$15k–$25k 12.4%

$25k–$35k 9.7%

$35k–$50k 12.9%

$50k–$75k 20.0%

$75k–$100k 12.1%

$100k–$150k 11.0%

$150k–$200k 5.1%

$200k+ 5.3%

Range	% of households
Under $10k	4.7%
$10k–$15k	6.8%
$15k–$25k	12.4%
$25k–$35k	9.7%
$35k–$50k	12.9%
$50k–$75k	20.0%
$75k–$100k	12.1%
$100k–$150k	11.0%
$150k–$200k	5.1%
$200k+	5.3%
Median income	$52,125

Housing

Home values

Under $50k 12.0%

$50k–$100k 7.8%

$100k–$150k 14.9%

$150k–$200k 16.3%

$200k–$300k 22.7%

$300k–$500k 19.7%

$500k–$1M 5.0%

$1M+ 1.6%

Housing overview

Metric	Value
Median home value	$197,800
Median rent / month	$824
Owner occupied	56.6%
Renter occupied	43.4%
Vacant	8.6%
Single-family detached	61.5%
Large apartment buildings	1.8%
Mobile homes	10.5%
Median rooms	5.3
Avg household size (owned)	2.59

Year built

Era	%
2020 or later	0.0%
2010–2019	9.9%
2000–2009	14.1%
1990–1999	16.8%
1980–1989	12.6%
1970–1979	14.0%
1960–1969	10.9%
1950–1959	7.1%
1940–1949	2.9%
1939 or earlier	11.8%

Bedrooms

Size	% of units
No bedroom (studio)	1.6%
1 bedroom	9.1%
2 bedrooms	27.7%
3 bedrooms	42.5%
4 bedrooms	16.2%
5+ bedrooms	2.9%

Vehicles per household

Vehicles	% of households
No vehicle	6.3%
1 vehicle	31.2%
2 vehicles	34.9%
3 or more	27.6%

Heating fuel

Fuel type	%
Utility gas	46.8%
Electricity	30.8%
Propane / LP gas	12.9%
Fuel oil	0.2%
Wood	6.0%
Solar	0.1%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	2,577	42.6%
Cohabiting couple	292	4.8%
Male householder, no spouse	1,453	24.0%
Female householder, no spouse	1,721	28.5%
Households with children under 18	1,746	28.9%
Households with seniors (65+)	1,709	28.3%
Average household size	2.36

Marital status

Status	Male	Female
Never married	41.8%	30.2%
Married	41.8%	46.2%
Separated	1.8%	0.4%
Widowed	2.6%	7.1%
Divorced	12.1%	16.2%

Education

Less than 9th grade 5.4%

Some HS, no diploma 4.7%

HS graduate 27.7%

Some college, no degree 24.8%

Associate's degree 9.2%

Bachelor's degree 15.2%

Graduate / professional 12.8%

Metric	%
HS diploma or higher	89.8%
Bachelor's or higher	28.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	228	4.9%
Kindergarten	302	6.5%
Elementary school	1,575	34.1%
High school	673	14.6%
College / grad school	1,842	39.9%

Employment

Industry of employment

Education & healthcare 30.1%

Retail trade 9.2%

Arts, food & hospitality 9.2%

Agriculture & mining 8.4%

Finance & real estate 7.6%

Professional & management 7.2%

Public administration 7.0%

Other services 6.2%

Construction 5.9%

Transportation & utilities 3.9%

Manufacturing 3.4%

Wholesale trade 1.5%

Information 0.4%

Occupation

Category	%
Management, business & arts	33.9%
Service	18.6%
Sales & office	25.2%
Natural resources & construction	12.3%
Production & transportation	10.0%

Employment type

Type	%
Private sector	70.8%
Government	21.7%
Self-employed	7.3%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	80.0%
Carpool	11.6%
Public transit	0.2%
Walk	3.7%
Work from home	3.7%
Other means	0.7%
Avg commute (minutes)	15.1

Poverty

All people 16.4%

Under 18 years 15.6%

18 and over 16.6%

Married-couple families 6.4%

Female-led households 29.4%

Income support

Source	% of households
Social Security	32.1%
Retirement income	19.5%
Supplemental Security	8.9%
Cash public assistance	5.8%
Food stamps / SNAP	26.4%

Health indicators

Condition	%
Obesity	31.0%
High blood pressure	27.5%
High cholesterol	28.0%
Diabetes	10.9%
Heart disease	5.9%
Stroke	3.0%
Asthma	10.7%
Arthritis	22.2%
Kidney disease	3.1%
Pulmonary disease	6.6%
Cancer	5.2%

Behavior / access	%
Smoking	16.9%
Binge drinking	17.2%
No physical activity	24.9%
Less than 7 hrs sleep	30.0%
Depression	20.1%
Fair or poor health	17.3%
Poor mental health	15.9%
Poor physical health	11.9%
No health insurance	21.7%
Visited doctor (checkup)	66.6%
Visited dentist	56.3%
Cholesterol screening	85.7%
Teeth loss	16.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	594	5.1%

Disability	%
Any disability	15.4%
Under 18	6.5%
18–64 years	15.9%
65 and over	28.5%

Health insurance coverage

Type	%
Private insurance	55.5%
Public insurance	47.0%
No insurance	7.4%
Uninsured under 19	4.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	14,314	93.9%
Spanish	720	5.0%
Other Indo-European	628	4.4%
Asian & Pacific Islander	11	0.1%
Other languages	27	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	14,586	95.7%
Born in same state	14,446	94.8%
Born in different state	10,283	67.5%
Foreign born	140	0.9%
Naturalized citizen	659	4.3%
Not a US citizen	356	54.0%

Ancestry

Ancestry	Count	%
Italian	1,758	11.5%
French	1,209	7.9%
Arab	292	1.9%
Polish	229	1.5%
English	185	1.2%

Ancestry	Count	%
Norwegian	75	0.5%
Dutch	30	0.2%
German	16	0.1%
Irish	13	0.1%

Technology access

Metric	% of households
Computer access	39.6%
Internet access	92.8%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 81101

What city is ZIP code 81101 in?

ZIP code 81101 is primarily assigned to Alamosa, Colorado.

What county is ZIP code 81101 in?

ZIP code 81101 falls within Alamosa County, Colorado.

What is the poverty rate in ZIP code 81101?

16% of residents in ZIP code 81101 live below the poverty line, above the national average.

What is the population of ZIP code 81101?

ZIP code 81101 has an estimated population of 15,245 residents, with a density of 41 people per square mile.

What is the median household income in ZIP code 81101?

The median household income in ZIP code 81101 is $52,125, below the national median of ~$75,000.

What is the typical home value in ZIP code 81101?

The median home value in ZIP code 81101 is $197,800.

What timezone is ZIP code 81101 in?

ZIP code 81101 observes the MST timezone.