81123 ZIP Code — Blanca, CO

Costilla County, Colorado

ZIP code 81123 is located in Blanca, Colorado, within Costilla County. It covers approximately 145.65 square miles and serves a population of 729 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 719.

About ZIP code 81123

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $107,800. Owner-occupancy is high at 79%, well above the national average.

Median household income is $34,444. Poverty affects 20% of residents, above the national average. SNAP benefit usage at 21% of households reflects economic stress in the area. 46% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is natural resources, construction, and trades, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average.

Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.

Health indicators show elevated rates of diabetes (15%) compared to national benchmarks.

Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%; and disability rates above the national average at 23%.

Overall, ZIP code 81123 reflects a community defined by economic challenges above the national average, a strong veteran community, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.

729

population

145.65

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

81123 ZIP code map

Cities in ZIP code 81123

Below are the cities the US Postal Service accepts for ZIP code 81123. Using any city not on this list may result in mail delivery delays.

City	Status
Blanca	Preferred

Nearby ZIP codes

81101 Alamosa (10.7 mi) 81133 Fort Garland (14.6 mi) 81151 Sanford (15.6 mi) 81102 Alamosa (16.6 mi) 81146 Mosca (17.8 mi)

Demographics updated 05/2026

Population
Total population	729
Population density	5 / sq mi
State FIPS	08
County FIPS	023

Geography
Land area	145.65 sq mi
Water area	1.12 sq mi
Latitude	37.4024
Longitude	-105.5890
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	62.4%	68.1%	32.5%
$50k – $100k	23.9%	21.8%	31.0%
$100k – $200k	10.0%	6.7%	26.9%
Over $200k	3.7%	3.4%	9.6%

Demographics & statistics

729

Population

People per sq mi

53.0

Median age

$34,444

Median household income

$20,100

Per capita income

$107,800

Median home value

$856

Median monthly rent

78.6%

Home ownership

20.4%

Poverty rate

6.9%

Unemployment

380

Housing units

23.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	151	20.7%
18 and over	578	79.3%
65 and over	187	25.7%
Median age	53.0 years

Race & ethnicity

White 55.8%

Hispanic or Latino 16.8%

Two or more races 11.5%

Other race 7.9%

Asian 5.3%

Black or African American 2.6%

American Indian / Alaska Native 0.1%

Group	Count	%
White	489	55.8%
Hispanic or Latino	147	16.8%
Two or more races	101	11.5%
Other race	69	7.9%
Asian	46	5.3%
Black or African American	23	2.6%
American Indian / Alaska Native	1	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	62.4%	68.1%	32.5%
$50k – $100k	23.9%	21.8%	31.0%
$100k – $200k	10.0%	6.7%	26.9%
Over $200k	3.7%	3.4%	9.6%

Under $10k 22.0%

$10k–$15k 5.4%

$15k–$25k 6.6%

$25k–$35k 19.0%

$35k–$50k 8.7%

$50k–$75k 18.1%

$75k–$100k 9.9%

$100k–$150k 9.0%

$150k–$200k 1.2%

Range	% of households
Under $10k	22.0%
$10k–$15k	5.4%
$15k–$25k	6.6%
$25k–$35k	19.0%
$35k–$50k	8.7%
$50k–$75k	18.1%
$75k–$100k	9.9%
$100k–$150k	9.0%
$150k–$200k	1.2%
Median income	$34,444

Housing

Home values

Under $50k 19.2%

$50k–$100k 25.7%

$100k–$150k 20.3%

$150k–$200k 9.2%

$200k–$300k 13.0%

$300k–$500k 12.6%

Housing overview

Metric	Value
Median home value	$107,800
Median rent / month	$856
Owner occupied	78.6%
Renter occupied	21.4%
Vacant	26.4%
Single-family detached	74.3%
Large apartment buildings	0.0%
Mobile homes	23.1%
Median rooms	4.9
Avg household size (owned)	1.95

Year built

Era	%
2020 or later	0.0%
2010–2019	6.9%
2000–2009	27.5%
1990–1999	17.1%
1980–1989	13.5%
1970–1979	19.1%
1960–1969	2.2%
1950–1959	1.3%
1940–1949	3.3%
1939 or earlier	9.1%

Bedrooms

Size	% of units
No bedroom (studio)	8.0%
1 bedroom	10.0%
2 bedrooms	26.4%
3 bedrooms	38.4%
4 bedrooms	14.9%
5+ bedrooms	2.4%

Vehicles per household

Vehicles	% of households
No vehicle	1.2%
1 vehicle	35.2%
2 vehicles	39.5%
3 or more	24.1%

Heating fuel

Fuel type	%
Utility gas	1.8%
Electricity	6.6%
Propane / LP gas	53.6%
Fuel oil	8.1%
Wood	22.9%

Households & families

Household type	Count	%
Married-couple family	142	42.8%
Cohabiting couple	19	5.7%
Male householder, no spouse	90	27.1%
Female householder, no spouse	81	24.4%
Households with children under 18	63	19.0%
Households with seniors (65+)	149	44.9%
Average household size	2.20

Marital status

Status	Male	Female
Never married	33.9%	31.3%
Married	47.6%	47.4%
Separated	0.3%	0.0%
Widowed	4.7%	6.9%
Divorced	13.5%	14.5%

Education

Less than 9th grade 7.8%

Some HS, no diploma 9.6%

HS graduate 31.2%

Some college, no degree 19.5%

Associate's degree 9.0%

Bachelor's degree 18.3%

Graduate / professional 4.7%

Metric	%
HS diploma or higher	82.7%
Bachelor's or higher	23.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	21	13.7%
Kindergarten	3	2.0%
Elementary school	52	34.0%
High school	67	43.8%
College / grad school	10	6.5%

Employment

Industry of employment

Education & healthcare 23.6%

Agriculture & mining 22.9%

Transportation & utilities 10.5%

Construction 8.9%

Wholesale trade 8.5%

Retail trade 7.0%

Public administration 7.0%

Manufacturing 3.1%

Finance & real estate 3.1%

Professional & management 3.1%

Arts, food & hospitality 2.3%

Occupation

Category	%
Management, business & arts	22.9%
Service	5.4%
Sales & office	15.9%
Natural resources & construction	30.2%
Production & transportation	25.6%

Employment type

Type	%
Private sector	62.8%
Government	22.9%
Self-employed	9.3%
Unpaid family workers	5.0%

Commute

Method	%
Drive alone	80.5%
Carpool	10.8%
Public transit	0.0%
Walk	7.9%
Work from home	0.8%
Other means	0.0%
Avg commute (minutes)	21.5

Poverty

All people 20.4%

Under 18 years 3.3%

18 and over 24.9%

Married-couple families 11.3%

Female-led households 27.3%

Income support

Source	% of households
Social Security	46.4%
Retirement income	30.4%
Supplemental Security	10.2%
Cash public assistance	1.8%
Food stamps / SNAP	21.1%

Health indicators

Condition	%
Obesity	29.8%
High blood pressure	35.9%
High cholesterol	35.4%
Diabetes	15.4%
Heart disease	9.1%
Stroke	4.6%
Asthma	10.8%
Arthritis	29.6%
Kidney disease	4.4%
Pulmonary disease	9.7%
Cancer	6.9%

Behavior / access	%
Smoking	19.0%
Binge drinking	14.0%
No physical activity	29.5%
Less than 7 hrs sleep	30.3%
Depression	19.7%
Fair or poor health	22.4%
Poor mental health	14.8%
Poor physical health	15.1%
No health insurance	22.4%
Visited doctor (checkup)	70.7%
Visited dentist	51.3%
Cholesterol screening	89.2%
Teeth loss	19.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	74	12.8%

Disability	%
Any disability	22.5%
Under 18	0.0%
18–64 years	19.4%
65 and over	47.1%

Health insurance coverage

Type	%
Private insurance	39.8%
Public insurance	61.7%
No insurance	11.5%
Uninsured under 19	5.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	679	93.1%
Spanish	70	10.3%
Other Indo-European	70	10.3%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	656	90.0%
Born in same state	649	89.0%
Born in different state	326	44.7%
Foreign born	7	1.0%
Naturalized citizen	73	10.0%
Not a US citizen	15	20.5%

Ancestry

Ancestry	Count	%
French	104	14.3%
Italian	46	6.3%
Arab	19	2.6%

Ancestry	Count	%
Irish	17	2.3%
Polish	10	1.4%

Technology access

Metric	% of households
Computer access	45.5%
Internet access	93.7%

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

Frequently asked questions about ZIP code 81123

What city is ZIP code 81123 in?

ZIP code 81123 is primarily assigned to Blanca, Colorado.

What county is ZIP code 81123 in?

ZIP code 81123 falls within Costilla County, Colorado.

Does ZIP code 81123 have an older population?

26% of residents in ZIP code 81123 are 65 or older, above the national average of ~17%.

Does ZIP code 81123 have a large retiree population?

46% of households in ZIP code 81123 receive Social Security income, suggesting a significant retiree or disability population.

What is the poverty rate in ZIP code 81123?

20% of residents in ZIP code 81123 live below the poverty line, above the national average.

Does ZIP code 81123 have a large veteran population?

13% of civilians in ZIP code 81123 are veterans, above the national average of ~7%.

What timezone is ZIP code 81123 in?

ZIP code 81123 observes the MST timezone.