PlainZIP

Boulder, CO · standard

ZIP Code 80305

Boulder County, Colorado - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

16,874
905/sq mi
$126,107
Median income
$1,032,900
Median home value
79.4%
Bachelor's or higher

The verdict

Boulder pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.

Top 8%
household income, US ZIPs
Top 2%
home value, US ZIPs
905
people per sq mi
60%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 80305 against every reporting US ZIP.

ZIP code 80305 is a mid-sized community (a standard USPS delivery area) in Boulder, Boulder County, Colorado, home to 16,874 residents across 18.6 square miles, a density of 905 people per square mile, in the Denver time zone.

ZIP 80305 skews affluent, with a median household income of $126,107 (42% above the Colorado average), while per-capita income is $74,287. Local economic indicators show a 12.2% poverty rate alongside 4.6% unemployment. Housing costs here run $1,032,900 for a typical home value (113% above the state average), with rent averaging $2,311 a month; 60.2% of homes are owner-occupied.

This is a highly-educated ZIP: 79.4% of adults hold a bachelor's degree or higher, the median age is 36.7, and the average commute is 19 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Boulder County, so you can benchmark 80305 against its immediate geography rather than a national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 80305

Top 5 sectors by establishment count in Boulder, CO

Which industries have the most business establishments in ZIP 80305.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 80305, Boulder, CO · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

16,874

Population

18.6

Area (sq mi)

905

People / sq mi

Denver

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 80305?

36.7

Median Age

50.9%

Male

49.1%

Female

9.4%

Foreign-Born

White 83.8%
African American 1.2%
Asian 4.2%
American Indian or Alaska Native 0.4%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 8.8%
Hispanic or Latino 7.5%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$126,107

Median Household Income

+42% vs state

$74,287

Per Capita Income

12.2%

Poverty Rate

4.6%

Unemployment Rate

18.8 min

Mean Commute Time

How ZIP 80305 ranks nationally

Boulder, CO household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$126,107 Top 8% higher than 92% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). This entry sits in this band. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 84.5%
Bachelor's Degree or Higher 79.4%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

7,303

Total Housing Units

6,976

Occupied Units

327

Vacant Units

2.32

Avg Household Size

Occupancy Type

Owner 60.2%
Renter 39.8%

$1,032,900

Median Home Value

+113% vs state

$2,311

Median Rent

1970

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+1.4%

YoY Change (2024)

335

HPI Index (2000 = 100)

+235%

Total Change Since 2000

Home values in ZIP 80305 have increased 1.4% over the past year (2024). Since 2000, this ZIP has seen +235% cumulative appreciation.

Year Annual Change HPI Index
2020 -0.4% 250
2021 +7.6% 270
2022 +19.0% 321
2023 +3.0% 331
2024 +1.4% 335

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 469 business establishments in ZIP 80305, employing approximately 2,985 people with a combined annual payroll of $171,328,000.

469

Businesses

2,985

Employees

$171.3M

Annual Payroll

14

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 163 34.8%
Health care and social assistance 68 14.5%
Other services (except public administration) 31 6.6%
Retail trade 30 6.4%
Construction 28 6.0%
Real estate and rental and leasing 26 5.5%
Arts, entertainment, and recreation 23 4.9%
Accommodation and food services 22 4.7%
Finance and insurance 19 4.0%
Administrative and support and waste management and remediation services 19 4.0%
Educational services 14 3.0%
Information 11 2.4%
Wholesale trade 8 1.7%
Manufacturing 4 0.8%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 80305 vs 80303 →

ZIP 80305 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 80305 ranks #7 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 80305 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 80305 ranks #6 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
80303 Boulder, CO 22,361 1.9 mi
80310 Boulder, CO 6,578 2.1 mi
80025 Eldorado Springs, CO 253 3.0 mi
80027 Louisville, CO 31,034 4.8 mi
80304 Boulder, CO 25,623 5.4 mi
80301 Boulder, CO 22,555 5.7 mi
80007 Arvada, CO 7,262 8.0 mi
80302 Boulder, CO 26,941 7.7 mi
80544 Niwot, CO 111 9.8 mi
80403 Golden, CO 18,211 10.5 mi

More ZIP Codes in Boulder County

80504 standard
Longmont, CO
Pop: 46,876
80501 standard
Longmont, CO
Pop: 39,521
80503 standard
Longmont, CO
Pop: 31,064
80027 standard
Louisville, CO
Pop: 31,034
80302 standard
Boulder, CO
Pop: 26,941
80026 standard
Lafayette, CO
Pop: 26,378

Related Areas

Boulder County Boulder, CO Colorado

Frequently Asked Questions

What county is ZIP code 80305 in? ▼
ZIP code 80305 (Boulder) is located in Boulder County, Colorado. Boulder County contains multiple ZIP codes, see the full list at /counties/boulder-co.
What is the population of ZIP code 80305? ▼
ZIP code 80305 in Boulder, CO has a population of 16,874 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 80305? ▼
The median household income in ZIP 80305 is $126,107, which is 65% above the national average of $76,288.
What is the average home value in ZIP 80305? ▼
The median home value in ZIP 80305 is $1,032,900, which is 271% above the national average of $278,155.
What is the demographic makeup of ZIP 80305? ▼
The largest racial group in ZIP 80305 is White at 83.8%. Hispanic or Latino residents make up 7.5% of the population.
How many businesses are in ZIP code 80305? ▼
ZIP code 80305 has 469 business establishments employing approximately 2,985 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 80305? ▼
The top industries by establishment count in ZIP 80305 are: Professional, scientific, and technical services (163), Health care and social assistance (68), Other services (except public administration) (31). There are 14 industry sectors represented in total.
How have home values changed in ZIP code 80305? ▼
According to the FHFA House Price Index, home values in ZIP 80305 increased by 1.4% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 235%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 80305? ▼
In ZIP code 80305, 84.5% of residents aged 25+ have a high school diploma or higher, and 79.4% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 80305? ▼
The mean commute time for workers in ZIP code 80305 is 18.8 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 80305? ▼
In ZIP code 80305, approximately 60.2% of occupied housing units are owner-occupied and 39.8% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 80305? ▼
The poverty rate in ZIP code 80305 is 12.2% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.