Boulder County, CO

County in Colorado, West · ranked on 47 metrics

Rank among US counties

Boulder County, CO is a county in Colorado with a population of 327,635 (229th of 3,094). It ranks best for Adults with Obesity (%) (2nd of 2,916), Bachelor’s Degree or Higher (% of Adults 25+) (12th of 3,094), Homes with Broadband Internet (%) (30th of 3,094). It ranks lowest for Median Home Value (Capped at $2M) (3,056th of 3,092), Unemployment Rate (%) (tied 1,507th of 3,094).

Population
327.6K
229th highest of 3,094
Density
451.3
316th highest of 3,094
Growth since 2020
-1.01%
2,136th highest of 3,094
Area
726
1,206th highest of 3,094
Region
West
Colorado

At a glance

Median household income
$103,994
132nd highest of 3,093
Median home value
$756,300
37th highest of 3,092
Median rent
$1,966
54th highest of 3,090
Unemployment
4%
1,480th highest of 3,094
Poverty rate
11.2%
2,051st highest of 3,094
College degree
64.2%
12th highest of 3,094
Adult obesity
17.4%
2,915th highest of 2,916
No health insurance
8.1%
2,373rd highest of 2,916
Average commute
22 minutes
1,956th highest of 3,094
Home broadband
95.7%
30th highest of 3,094
Climate
45.2°F average
28°F in January, 66°F in July
2024 presidential vote
Democratic +55.8
20.8% Republican, 76.5% Democratic

Strengths and weak spotsPercentileWhere a place sits among all places, from 0 to 100. 100 is the best, 50 is the middle, 0 is the worst.More in the glossary →

Percentile on 22 metrics that rank at least half of all US counties, given whether higher or lower is better.

Best at

Highest percentiles, given whether higher or lower is better

  1. Adults Sleeping Under 7 Hours (%)24.7%
    Health of Adults by County (CDC PLACES) · 2022
    1st of 3,094
  2. Adults with No Leisure-Time Exercise (%)12.2%
    Health of Adults by County (CDC PLACES) · 2023
    1st of 2,916
  3. Adults with Obesity (%)17.4%
    Health of Adults by County (CDC PLACES) · 2023
    2nd of 2,916
  4. Adults with Diabetes (%)6.7%
    Health of Adults by County (CDC PLACES) · 2023
    tied 8th of 2,916
  5. Bachelor’s Degree or Higher (% of Adults 25+)64.2%
    Housing, Income and Commutes by County (Census) · 2024
    12th of 3,094
  6. Homes with Broadband Internet (%)95.7%
    Housing, Income and Commutes by County (Census) · 2024
    30th of 3,094
  7. Adults in Fair or Poor Health (%)12.6%
    Health of Adults by County (CDC PLACES) · 2023
    tied 28th of 2,916
  8. Adults Who Smoke (%)9.4%
    Health of Adults by County (CDC PLACES) · 2023
    tied 51st of 2,916
  9. Cooling Degree Days per Year164
    Climate by County (1991–2020 Averages)
    tied 128th of 3,050
  10. Median Household Income$103,994
    Housing, Income and Commutes by County (Census) · 2024
    132nd of 3,093

Worst at

Lowest percentiles, given whether higher or lower is better

  1. Median Home Value (Capped at $2M)$756,300
    Housing, Income and Commutes by County (Census) · 2024
    3,056th of 3,092
  2. Median Rent (Monthly, Capped at $3,501)$1,966
    Housing, Income and Commutes by County (Census) · 2024
    3,037th of 3,090
  3. Adults with a Yearly Checkup (%)68.4%
    Health of Adults by County (CDC PLACES) · 2023
    tied 2,760th of 2,916
  4. Heating Degree Days per Year7,356
    Climate by County (1991–2020 Averages)
    tied 2,545th of 3,050
  5. Adults Who Binge Drink (%)19.4%
    Health of Adults by County (CDC PLACES) · 2023
    tied 2,185th of 2,916
  6. Unemployment Rate (%)4%
    Unemployment Rate by County (BLS) · 2025
    tied 1,507th of 3,094
  7. Adults with Depression (%)23.5%
    Health of Adults by County (CDC PLACES) · 2023
    tied 1,315th of 2,916
  8. Average Commute (Minutes)22.3
    Housing, Income and Commutes by County (Census) · 2024
    1,139th of 3,094
  9. Poverty Rate (%)11.2%
    Housing, Income and Commutes by County (Census) · 2024
    1,044th of 3,094
  10. Median Income$103,994
    Poorest Counties
    132nd of 2,000

Profile by category

Average percentile per category, from the median line. Select a category to list its metrics.

Strongest category Health (78), weakest Economics (63). Select a category to list its metrics.

Notable facts

Where it ranks first or last among US counties

Where it is

Shaded by population; select a place to open it

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Similar places

Closest percentiles on 20 widely reported measures from 7 categories, leaving out size and totals

  1. Hennepin County, MN85% similar
  2. Newport County, RI85% similar
    Compared on 15 of 20
  3. Jefferson County, CO83% similar
  4. Bristol County, RI83% similar
    Compared on 15 of 20
  5. Eagle County, CO83% similar
    Compared on 15 of 20

Quick answers

What is the population of Boulder County, CO?
Boulder County, CO has a population of 327,635, 229th among 3,094 US counties.
What does Boulder County, CO rank best at?
Among US counties, Boulder County, CO ranks best for Adults with Obesity (%) (2nd of 2,916); Bachelor’s Degree or Higher (% of Adults 25+) (12th of 3,094); Homes with Broadband Internet (%) (30th of 3,094).
Where does Boulder County, CO rank worst?
Boulder County, CO ranks lowest for Median Home Value (Capped at $2M) (3,056th of 3,092); Unemployment Rate (%) (tied 1,507th of 3,094).
How many statistics does Rankodex have for Boulder County, CO?
Rankodex ranks Boulder County, CO on 47 statistics compared with other US counties, compiled from World Population Review and the sources it cites.

Every metric

47 metrics with a value for this place, in 14 topics