Zip Code 80304
Boulder, Colorado — Boulder County
📍 ZIP code 80304 is in Boulder, Boulder County, Colorado.
ZIP code 80304 is located in Boulder, Boulder County, Colorado. It is a zip code in the Mountain (MST/MDT) Time Zone with an estimated population of 25,634. The area code for ZIP code 80304 is 303.
Quick Answer
Zip code 80304 is in Boulder, Colorado (Boulder County). It has a population of 25,634, median household income of $121,534, and median home value of $1,166,100.
Population
25,634
Income
$121,534
Home Value
$1,166,100
Climate
88°F / 22°F
About Zip Code 80304
Zip code 80304 is located in Boulder, Colorado, within Boulder County. Home to approximately 25,634 residents, this area sits at an elevation of 5611 ft and falls within the Mountain (MST/MDT) timezone. The local area code is 303.
The median household income is $121,534 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $1,166,100, and the cost of living index is 250 (150% above the national average of 100).
Summers average a high of 88°F while winters drop to 22°F. The area receives about 21 in of rain and 93 in of snow annually. The zip code covers 9.1 square miles of land area.
Key Statistics
25,634
$121,534
$1,166,100
Mountain (MST/MDT)
303
5611 ft
9.1 sq mi
41.5
11,717
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Compare With Nearby Zip Codes
| Metric | 80304 | 80302 | 80301 | 80455 | 80303 | 80025 |
|---|---|---|---|---|---|---|
| City | Boulder, CO | Boulder, CO | Boulder, CO | Jamestown, CO | Boulder, CO | Eldorado Springs, CO |
| Population | 25,634 | 29,751 | 25,252 | 378 | 24,934 | 101 |
| Median Income | $121,534 | $60,649 | $92,974 | $175,438 | $77,344 | $128,145 |
| Home Value | $1,166,100 | $1,123,800 | $761,500 | $535,700 | $941,600 | $643,800 |
| Cost of Living | 250 | 250 | 196 | 149 | 231 | 100 |
| Median Age | 41.5 | 24.5 | 37.4 | 48.1 | 29.8 | 40.1 |
Cost of Living
100 = National Average. Boulder's cost of living is 150% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
9.6x
Demographics
Zip code 80304 has a population of 25,634 people with a median age of 41.5. There are 11,717 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Boulder (80304) population trend from 2010 to 2024
↑ 38.2%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
88°F
22°F
21 in
93 in
Boulder experiences warm summers with average highs around 88°F. Winters are cool with lows averaging 22°F. With 93 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$1,166,100
Median Household Income
$121,534
With 11,717 housing units across 9.1 square miles, 80304 has a housing density of 1,288 units per square mile. The home price-to-income ratio is 9.6x.
Location & Geography
Latitude
40.0454°
Longitude
-105.2913°
Land Area
9.1 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 80304 (Boulder, CO) with distances:
All Zip Codes in Boulder, CO
Other zip codes serving Boulder:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 80304's $121,534. A way to compare Boulder 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 80304 (Boulder, 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 Boulder, Colorado?
Boulder, Colorado uses zip code 80304 along with 3 other zip codes.
What county is zip code 80304 in?
Zip code 80304 is located in Boulder County, Colorado.
What is the population of zip code 80304?
The population of zip code 80304 is 25,634 with a median age of 41.5.
Is 80304 in Boulder, Colorado?
Yes, zip code 80304 is in Boulder, Boulder County, Colorado. The area code is 303.
Frequently Asked Questions
What city is zip code 80304 in?
Zip code 80304 is in Boulder, Colorado. It is part of Boulder County and uses the Mountain (MST/MDT) timezone.
What is zip code 80304?
Zip code 80304 is a U.S. postal code in Boulder, Colorado (Boulder County). It has a population of 25,634 and covers 9.1 square miles.
What is the population of zip code 80304?
The population of zip code 80304 (Boulder, CO) is 25,634 with a median age of 41.5. There are approximately 11,717 housing units in this area.
What is the median income in zip code 80304?
The median household income in zip code 80304 (Boulder, CO) is $121,534 per year. The cost of living index is 250 (100 = national average).
What is the average home price in zip code 80304?
The median home value in zip code 80304 (Boulder, CO) is $1,166,100. The cost of living index is 250 compared to the national average of 100.
What county is zip code 80304 in?
Zip code 80304 is located in Boulder County, Colorado. The primary city is Boulder.
What is the area code for zip code 80304?
Zip code 80304 in Boulder, CO uses area code 303. It is located in the Mountain (MST/MDT) timezone.
Is zip code 80304 a good place to live?
Zip code 80304 (Boulder, CO) has a cost of living index of 250 (100 = national average), a median household income of $121,534, and median home values of $1,166,100. The median age is 41.5. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 80304?
The cost of living index for zip code 80304 (Boulder, CO) is 250, where 100 represents the national average. This area is above the national average. Median home value: $1,166,100.
What schools serve zip code 80304?
Zip code 80304 in Boulder, Colorado is served by the local school district of Boulder 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.