Zip Code 80123
Littleton, Colorado — Jefferson County
📍 ZIP code 80123 is in Littleton, Jefferson County, Colorado.
ZIP code 80123 is located in Littleton, Jefferson County, Colorado. It is a zip code in the Mountain (MST/MDT) Time Zone with an estimated population of 45,364. The area code for ZIP code 80123 is 303.
Quick Answer
Zip code 80123 is in Littleton, Colorado (Jefferson County). It has a population of 45,364, median household income of $106,731, and median home value of $581,800.
Population
45,364
Income
$106,731
Home Value
$581,800
Climate
86°F / 19°F
About Zip Code 80123
Zip code 80123 is located in Littleton, Colorado, within Jefferson County. Home to approximately 45,364 residents, this area sits at an elevation of 5558 ft and falls within the Mountain (MST/MDT) timezone. The local area code is 303.
The median household income is $106,731 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $581,800, and the cost of living index is 166 (66% above the national average of 100).
Summers average a high of 86°F while winters drop to 19°F. The area receives about 17 in of rain and 34 in of snow annually. The zip code covers 11.9 square miles of land area and 1.6 square miles of water.
Key Statistics
45,364
$106,731
$581,800
Mountain (MST/MDT)
303
5558 ft
11.9 sq mi
40.9
19,759
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Compare With Nearby Zip Codes
| Metric | 80123 | 80235 | 80236 | 80120 | 80128 | 80227 |
|---|---|---|---|---|---|---|
| City | Littleton, CO | Denver, CO | Denver, CO | Littleton, CO | Littleton, CO | Denver, CO |
| Population | 45,364 | 8,374 | 17,207 | 29,992 | 36,859 | 34,946 |
| Median Income | $106,731 | $69,588 | $83,543 | $91,162 | $119,827 | $88,796 |
| Home Value | $581,800 | $544,000 | $495,800 | $596,400 | $554,100 | $535,000 |
| Cost of Living | 166 | 147 | 143 | 162 | 171 | 148 |
| Median Age | 40.9 | 36.3 | 37.4 | 42 | 39.7 | 39.8 |
Cost of Living
100 = National Average. Littleton's cost of living is 66% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
5.5x
Demographics
Zip code 80123 has a population of 45,364 people with a median age of 40.9. There are 19,759 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Littleton (80123) population trend from 2010 to 2024
↑ 27.9%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
86°F
19°F
17 in
34 in
Littleton experiences warm summers with average highs around 86°F. Winters are cold with lows averaging 19°F. With 34 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$581,800
Median Household Income
$106,731
With 19,759 housing units across 11.9 square miles, 80123 has a housing density of 1,660 units per square mile. The home price-to-income ratio is 5.5x.
Location & Geography
Latitude
39.6160°
Longitude
-105.0694°
Land Area
11.9 sq mi
Water Area
1.6 sq mi
Nearby Zip Codes
Zip codes closest to 80123 (Littleton, CO) with distances:
All Zip Codes in Littleton, CO
Other zip codes serving Littleton:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 80123's $106,731. A way to compare Littleton to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 80123 (Littleton, CO). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Littleton, Colorado?
Littleton, Colorado uses zip code 80123 along with 4 other zip codes.
What county is zip code 80123 in?
Zip code 80123 is located in Jefferson County, Colorado.
What is the population of zip code 80123?
The population of zip code 80123 is 45,364 with a median age of 40.9.
Is 80123 in Littleton, Colorado?
Yes, zip code 80123 is in Littleton, Jefferson County, Colorado. The area code is 303.
Frequently Asked Questions
What city is zip code 80123 in?
Zip code 80123 is in Littleton, Colorado. It is part of Jefferson County and uses the Mountain (MST/MDT) timezone.
What is zip code 80123?
Zip code 80123 is a U.S. postal code in Littleton, Colorado (Jefferson County). It has a population of 45,364 and covers 11.9 square miles.
What is the population of zip code 80123?
The population of zip code 80123 (Littleton, CO) is 45,364 with a median age of 40.9. There are approximately 19,759 housing units in this area.
What is the median income in zip code 80123?
The median household income in zip code 80123 (Littleton, CO) is $106,731 per year. The cost of living index is 166 (100 = national average).
What is the average home price in zip code 80123?
The median home value in zip code 80123 (Littleton, CO) is $581,800. The cost of living index is 166 compared to the national average of 100.
What county is zip code 80123 in?
Zip code 80123 is located in Jefferson County, Colorado. The primary city is Littleton.
What is the area code for zip code 80123?
Zip code 80123 in Littleton, CO uses area code 303. It is located in the Mountain (MST/MDT) timezone.
Is zip code 80123 a good place to live?
Zip code 80123 (Littleton, CO) has a cost of living index of 166 (100 = national average), a median household income of $106,731, and median home values of $581,800. The median age is 40.9. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 80123?
The cost of living index for zip code 80123 (Littleton, CO) is 166, where 100 represents the national average. This area is above the national average. Median home value: $581,800.
What schools serve zip code 80123?
Zip code 80123 in Littleton, Colorado is served by the local school district of Jefferson County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.