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Colorado ZIP Codes
Lake County
Twin Lakes, CO
81251
81251 ZIP Code — Twin Lakes, CO
Lake County, Colorado
ZIP code 81251 is located in
Twin Lakes ,
Colorado ,
within Lake County .
It covers approximately 139.18 square miles and serves a population of
351 residents.
This is a standard ZIP code in the Mountain (MT) timezone,
served by area code 719 .
About ZIP code 81251
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $434,800. Owner-occupancy is high at 96%, well above the national average.
Median household income is $70,054. Poverty affects 21% of residents, above the national average. 54% 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. An above-average commute of 46 minutes suggests many residents work outside the immediate area.
Educational attainment is high — 61% of residents hold a bachelor's degree or higher, well above the national average of 33%.
Health indicators show elevated rates of smoking (23%) compared to national benchmarks.
Notable community characteristics include a notable veteran presence at 14% of civilians, above the national average of 7%.
Overall, ZIP code 81251 reflects a community defined by a highly educated population, economic challenges above the national average, a strong veteran community, high homeownership, and a significant Social Security-dependent population.
81251 ZIP code map
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Cities in ZIP code 81251
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Demographics
updated 05/2026
Population
Total population
351
Population density
3 / sq mi
State FIPS
08
County FIPS
065
Geography
Land area
139.18 sq mi
Water area
3.73 sq mi
Latitude
39.1636
Longitude
-106.4336
Timezone
Mountain (MT)
Area code
719
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
31.3%
37.7%
32.5%
$50k – $100k
55.2%
34.6%
31.0%
$100k – $200k
0.0%
24.2%
26.9%
Over $200k
13.5%
3.5%
9.6%
Demographics & statistics
$70,054
Median household income
$434,800
Median home value
60.9%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 24 6.8% 18 and over 327 93.2% 65 and over 156 44.4% Median age 63.6 years
Race & ethnicity
Household income
Income range
This ZIP
County avg
State avg
Under $50k
31.3%
37.7%
32.5%
$50k – $100k
55.2%
34.6%
31.0%
$100k – $200k
0.0%
24.2%
26.9%
Over $200k
13.5%
3.5%
9.6%
Range % of households Under $10k 17.8% $10k–$15k 4.4% $15k–$25k 8.9% $35k–$50k 12.4% $50k–$75k 33.8% $75k–$100k 4.9% $100k–$150k 13.8% $200k+ 4.0% Median income $70,054
Housing
Housing overview
Metric Value Median home value $434,800 Median rent / month $0 Owner occupied 96.4% Renter occupied 3.6% Vacant 40.8% Single-family detached 93.4% Large apartment buildings 0.0% Mobile homes 0.0% Median rooms 5.6 Avg household size (owned) 1.58
Year built
Era % 2020 or later 0.0% 2010–2019 5.5% 2000–2009 25.3% 1990–1999 4.7% 1980–1989 2.1% 1970–1979 27.9% 1960–1969 5.0% 1950–1959 13.2% 1940–1949 3.2% 1939 or earlier 13.2%
Bedrooms
Size % of units No bedroom (studio) 10.3% 1 bedroom 7.4% 2 bedrooms 28.4% 3 bedrooms 30.0% 4 bedrooms 18.9% 5+ bedrooms 5.0%
Vehicles per household
Vehicles % of households No vehicle 3.6% 1 vehicle 36.0% 2 vehicles 29.3% 3 or more 31.1%
Heating fuel
Fuel type % Utility gas 20.9% Electricity 15.1% Propane / LP gas 33.3% Wood 20.9%
Households & families
Household type Count % Married-couple family 94 41.8% Cohabiting couple 0 0.0% Male householder, no spouse 57 25.3% Female householder, no spouse 74 32.9% Households with children under 18 11 4.9% Households with seniors (65+) 120 53.3% Average household size 1.56
Marital status
Status Male Female Never married 12.6% 32.4% Married 66.5% 67.6% Separated 0.0% 0.0% Widowed 0.0% 0.0% Divorced 21.0% 0.0%
Education
Some college, no degree
19.9%
Graduate / professional
17.7%
Metric % HS diploma or higher 100.0% Bachelor's or higher 60.9%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 0 0.0% Kindergarten 0 0.0% Elementary school 11 45.8% High school 13 54.2% College / grad school 0 0.0%
Employment
Industry of employment
Education & healthcare
38.5%
Professional & management
17.7%
Agriculture & mining
16.9%
Occupation
Category % Management, business & arts 62.3% Service 0.0% Sales & office 6.9% Natural resources & construction 21.5% Production & transportation 9.2%
Employment type
Type % Private sector 35.4% Government 55.4% Self-employed 9.2% Unpaid family workers 0.0%
Commute
Method % Drive alone 76.2% Carpool 0.0% Public transit 0.0% Walk 14.6% Work from home 9.2% Other means 0.0% Avg commute (minutes) 46.0
Poverty
Married-couple families
21.3%
Female-led households
0.0%
Income support
Source % of households Social Security 53.8% Retirement income 36.9% Supplemental Security 0.0% Cash public assistance 0.0% Food stamps / SNAP 0.0%
Health indicators
Condition % Obesity 30.7% High blood pressure 37.0% High cholesterol 38.4% Diabetes 13.3% Heart disease 9.1% Stroke 4.5% Asthma 10.9% Arthritis 33.1% Kidney disease 4.0% Pulmonary disease 11.2% Cancer 8.2%
Behavior / access % Smoking 22.5% Binge drinking 14.7% No physical activity 25.8% Less than 7 hrs sleep 30.4% Depression 21.0% Fair or poor health 19.9% Poor mental health 14.5% Poor physical health 14.7% No health insurance 18.1% Visited doctor (checkup) 69.5% Visited dentist 54.2% Cholesterol screening 91.9% Teeth loss 18.5%
Veterans & disability
Veterans Count % Civilian veterans 46 14.1%
Disability % Any disability 0.0% Under 18 0.0% 18–64 years 0.0% 65 and over 0.0%
Health insurance coverage
Type % Private insurance 78.1% Public insurance 44.2% No insurance 8.8% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 351 100.0% Spanish 0 0.0% Other Indo-European 0 0.0% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 351 100.0% Born in same state 351 100.0% Born in different state 128 36.5% Foreign born 0 0.0% Naturalized citizen 0 0.0% Not a US citizen 0 0.0%
Ancestry
Ancestry Count % Italian 89 25.4% French 58 16.5%
Ancestry Count % Arab 23 6.6%
Technology access
Metric % of households Computer access 64.1% Internet access 100.0%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 81251
What city is ZIP code 81251 in?
ZIP code 81251 is primarily assigned to Twin Lakes, Colorado.
What county is ZIP code 81251 in?
ZIP code 81251 falls within Lake County, Colorado.
Does ZIP code 81251 have an older population?
44% of residents in ZIP code 81251 are 65 or older, above the national average of ~17%.
Is ZIP code 81251 mostly owner-occupied?
96% of occupied units in ZIP code 81251 are owner-occupied, well above the national average.
Does ZIP code 81251 have a large retiree population?
54% of households in ZIP code 81251 receive Social Security income, suggesting a significant retiree or disability population.
How educated is the population of ZIP code 81251?
61% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What timezone is ZIP code 81251 in?
ZIP code 81251 observes the MST timezone.
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