80121 ZIP Code — Littleton, CO

Arapahoe County, Colorado

ZIP code 80121 is located in Littleton, Colorado, within Arapahoe County. It covers approximately 7.21 square miles and serves a population of 18,049 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 720.

About ZIP code 80121

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1960s, giving the area an established character. Median home value is $646,000. Owner-occupancy is high at 88%, well above the national average.

The gap between median ($130,815) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 5% is below the national average. 38% 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 25 minutes is near the national average. Remote work is prevalent — 24% of workers work from home.

Educational attainment is high — 63% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 80121 reflects a community defined by a highly educated population, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

18,049

population

7.21

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

80121 ZIP code map

Cities in ZIP code 80121

Below are the cities the US Postal Service accepts for ZIP code 80121. Using any city not on this list may result in mail delivery delays.

City	Status
Littleton	Acceptable
Littleton	Acceptable
Littleton	Preferred

Nearby ZIP codes

80113 Englewood (1.9 mi) 80122 Littleton (2.3 mi) 80237 Denver (3.1 mi) 80165 Littleton (3.2 mi) 80166 Littleton (3.2 mi) 80120 Littleton (3.3 mi) 80110 Englewood (3.8 mi) 80210 Denver (4.3 mi) 80222 Denver (4.4 mi) 80111 Englewood (4.5 mi) 80208 Denver (4.6 mi) 80236 Denver (4.9 mi)

Demographics updated 05/2026

Population
Total population	18,049
Population density	2,503 / sq mi
State FIPS	08
County FIPS	005

Geography
Land area	7.21 sq mi
Water area	0.01 sq mi
Latitude	39.6139
Longitude	-104.9555
Timezone	Mountain (MT)
Area code	720

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	22.3%	30.7%	32.5%
$50k – $100k	26.7%	32.3%	31.0%
$100k – $200k	29.1%	27.1%	26.9%
Over $200k	21.9%	9.9%	9.6%

Demographics & statistics

18,049

Population

2,503

People per sq mi

48.2

Median age

$130,815

Median household income

$86,129

Per capita income

$646,000

Median home value

$1,865

Median monthly rent

87.5%

Home ownership

4.5%

Poverty rate

2.4%

Unemployment

6,531

Housing units

63.2%

Bachelor's or higher

Age distribution

Male Female

407

Under 5

418

317

5–9

326

556

10–14

572

521

15–19

536

408

20–24

419

734

25–34

755

1,164

35–44

1,197

1,060

45–54

1,089

665

55–59

684

752

60–64

773

1,252

65–74

1,286

626

75–84

644

438

85+

450

← Male

Female →

Age summary

Group	Count	%
Under 18	3,334	18.5%
18 and over	14,715	81.5%
65 and over	4,696	26.0%
Median age	48.2 years

Race & ethnicity

White 87.6%

Two or more races 4.9%

Hispanic or Latino 3.3%

Asian 1.5%

Black or African American 1.1%

Other race 0.7%

Native Hawaiian / Pacific Islander 0.6%

American Indian / Alaska Native 0.3%

Group	Count	%
White	16,352	87.6%
Two or more races	919	4.9%
Hispanic or Latino	610	3.3%
Asian	272	1.5%
Black or African American	211	1.1%
Other race	133	0.7%
Native Hawaiian / Pacific Islander	114	0.6%
American Indian / Alaska Native	48	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	22.3%	30.7%	32.5%
$50k – $100k	26.7%	32.3%	31.0%
$100k – $200k	29.1%	27.1%	26.9%
Over $200k	21.9%	9.9%	9.6%

Under $10k 2.5%

$10k–$15k 1.4%

$15k–$25k 2.5%

$25k–$35k 4.7%

$35k–$50k 7.2%

$50k–$75k 9.2%

$75k–$100k 11.8%

$100k–$150k 17.2%

$150k–$200k 12.4%

$200k+ 31.1%

Range	% of households
Under $10k	2.5%
$10k–$15k	1.4%
$15k–$25k	2.5%
$25k–$35k	4.7%
$35k–$50k	7.2%
$50k–$75k	9.2%
$75k–$100k	11.8%
$100k–$150k	17.2%
$150k–$200k	12.4%
$200k+	31.1%
Median income	$130,815

Housing

Home values

Under $50k 1.2%

$100k–$150k 0.2%

$150k–$200k 0.5%

$200k–$300k 1.4%

$300k–$500k 24.4%

$500k–$1M 47.5%

$1M+ 24.8%

Housing overview

Metric	Value
Median home value	$646,000
Median rent / month	$1,865
Owner occupied	87.5%
Renter occupied	12.5%
Vacant	3.8%
Single-family detached	85.0%
Large apartment buildings	5.7%
Mobile homes	0.5%
Median rooms	8.0
Avg household size (owned)	2.53

Year built

Era	%
2020 or later	0.2%
2010–2019	2.9%
2000–2009	6.4%
1990–1999	10.9%
1980–1989	11.8%
1970–1979	22.4%
1960–1969	29.5%
1950–1959	12.7%
1940–1949	1.0%
1939 or earlier	2.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.8%
1 bedroom	5.5%
2 bedrooms	9.8%
3 bedrooms	30.3%
4 bedrooms	34.1%
5+ bedrooms	19.5%

Vehicles per household

Vehicles	% of households
No vehicle	4.0%
1 vehicle	24.5%
2 vehicles	38.6%
3 or more	33.0%

Heating fuel

Fuel type	%
Utility gas	81.9%
Electricity	16.2%
Propane / LP gas	0.6%
Solar	0.2%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	4,399	61.6%
Cohabiting couple	272	3.8%
Male householder, no spouse	829	11.6%
Female householder, no spouse	1,643	23.0%
Households with children under 18	1,896	26.5%
Households with seniors (65+)	3,173	44.4%
Average household size	2.48

Marital status

Status	Male	Female
Never married	25.3%	21.3%
Married	64.0%	56.2%
Separated	0.4%	0.5%
Widowed	2.5%	10.0%
Divorced	7.8%	12.0%

Education

Less than 9th grade 0.3%

Some HS, no diploma 1.6%

HS graduate 13.1%

Some college, no degree 15.3%

Associate's degree 6.7%

Bachelor's degree 36.6%

Graduate / professional 26.6%

Metric	%
HS diploma or higher	98.2%
Bachelor's or higher	63.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	292	8.3%
Kindergarten	171	4.9%
Elementary school	1,345	38.2%
High school	959	27.2%
College / grad school	756	21.5%

Employment

Industry of employment

Education & healthcare 21.2%

Professional & management 17.3%

Finance & real estate 13.6%

Retail trade 8.3%

Arts, food & hospitality 8.2%

Manufacturing 6.7%

Public administration 5.9%

Construction 4.1%

Transportation & utilities 4.1%

Other services 4.0%

Information 3.0%

Agriculture & mining 1.9%

Wholesale trade 1.9%

Occupation

Category	%
Management, business & arts	57.6%
Service	11.9%
Sales & office	19.4%
Natural resources & construction	3.8%
Production & transportation	7.3%

Employment type

Type	%
Private sector	79.4%
Government	13.9%
Self-employed	6.3%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	68.9%
Carpool	2.8%
Public transit	1.6%
Walk	0.9%
Work from home	23.5%
Other means	2.2%
Avg commute (minutes)	25.4

Poverty

All people 4.5%

Under 18 years 3.0%

18 and over 4.9%

Married-couple families 1.3%

Female-led households 6.7%

Income support

Source	% of households
Social Security	38.4%
Retirement income	31.3%
Supplemental Security	2.2%
Cash public assistance	1.6%
Food stamps / SNAP	2.5%

Health indicators

Condition	%
Obesity	22.9%
High blood pressure	30.6%
High cholesterol	31.7%
Diabetes	7.9%
Heart disease	5.8%
Stroke	2.6%
Asthma	9.4%
Arthritis	24.9%
Kidney disease	2.7%
Pulmonary disease	5.2%
Cancer	8.7%

Behavior / access	%
Smoking	11.1%
Binge drinking	17.7%
No physical activity	15.9%
Less than 7 hrs sleep	25.4%
Depression	18.2%
Fair or poor health	8.8%
Poor mental health	11.7%
Poor physical health	8.0%
No health insurance	9.5%
Visited doctor (checkup)	72.4%
Visited dentist	72.4%
Cholesterol screening	93.6%
Teeth loss	7.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	940	6.4%

Disability	%
Any disability	10.8%
Under 18	3.9%
18–64 years	5.9%
65 and over	26.7%

Health insurance coverage

Type	%
Private insurance	82.7%
Public insurance	30.0%
No insurance	3.7%
Uninsured under 19	3.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	17,224	95.4%
Spanish	211	1.2%
Other Indo-European	96	0.6%
Asian & Pacific Islander	33	0.2%
Other languages	74	0.4%

Place of birth & citizenship

Origin	Count	%
Native born (US)	17,301	95.9%
Born in same state	17,200	95.3%
Born in different state	7,987	44.3%
Foreign born	101	0.6%
Naturalized citizen	748	4.1%
Not a US citizen	441	59.0%

Ancestry

Ancestry	Count	%
French	3,168	17.6%
Italian	2,917	16.2%
Arab	731	4.1%
English	435	2.4%
Polish	375	2.1%

Ancestry	Count	%
Dutch	191	1.1%
German	101	0.6%
Irish	63	0.3%
Norwegian	33	0.2%

Technology access

Metric	% of households
Computer access	39.6%
Internet access	97.5%

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

Frequently asked questions about ZIP code 80121

What city is ZIP code 80121 in?

ZIP code 80121 is primarily assigned to Littleton, Colorado.

What county is ZIP code 80121 in?

ZIP code 80121 falls within Arapahoe County, Colorado.

How educated is the population of ZIP code 80121?

63% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 80121 have an older population?

26% of residents in ZIP code 80121 are 65 or older, above the national average of ~17%.

Is ZIP code 80121 mostly owner-occupied?

88% of occupied units in ZIP code 80121 are owner-occupied, well above the national average.

Does ZIP code 80121 have a large retiree population?

38% of households in ZIP code 80121 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 80121 in?

ZIP code 80121 observes the MST timezone.