2025 Compare Cities People:
Walnut Creek, CA vs Boulder, CO

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Highlights
- Boulder is 0% more densely populated than Walnut Creek.
- People are 42.4% less likely to be married in Boulder.
- The Median Age is 18.9 years younger in Boulder.
 Walnut Creek, CABoulder, COUnited States
 Population  Unlock104,930329,725,481
 Female Population52.4%  Unlock50.5%
 Male Population47.6%  Unlock49.5%
 Median Age  Unlock28.938.4
 space3
 Population - 201064,376  Unlock309,327,143
 Population - 2000  Unlock94,673285,036,114
 Population - 199060,569  Unlock251,960,433
 Pop. 2000 to Now  Unlock13.7%15.6%
 Pop. 1990 to Now15.5%  Unlock30.8%
 space4
 Population Density  Unlock3,991.493.4
 Land Area19.8  Unlock3,531,905.4
 Water Area  Unlock1.0264,836.8
 space
 Est. Total Population By Age
 Walnut Creek, CABoulder, COUnited States
 Age 0 to 44.8%  Unlock5.9%
 Age 5 to 9  Unlock3.7%6.1%
 Age 10 to 143.8%  Unlock6.6%
 Age 15 to 17  Unlock2.5%3.9%
 Age 18 to 202.0%  Unlock4.0%
 Age 21 to 24  Unlock13.8%5.2%
 Age 25 to 3413.8%  Unlock13.8%
 Age 35 to 44  Unlock10.3%12.9%
 Age 45 to 5410.5%  Unlock12.6%
 Age 55 to 59  Unlock4.5%6.7%
 Age 60 to 645.9%  Unlock6.3%
 Age 65 to 74  Unlock7.0%9.6%
 Age 75 to 849.5%  Unlock4.5%
 Age 85 and over  Unlock1.8%1.9%
 space1
 Race
 Walnut Creek, CABoulder, COUnited States
 White63.4%  Unlock59.4%
 Black  Unlock1.0%12.2%
 Asian17.7%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.4%  Unlock0.2%
 Other  Unlock0.3%0.4%
 Two or More Races6.0%  Unlock3.2%
 Hispanic  Unlock10.6%18.4%
 space2
 Marriage & Family
 Walnut Creek, CABoulder, COUnited States
 Married Population55.5%  Unlock49.8%
     Currently Married  Unlock31.2%48.0%
 Married but Separated1.3%  Unlock1.8%
 Single Population  Unlock68.1%50.2%
 Never Married25.6%  Unlock33.8%
 Divorced  Unlock9.5%10.8%
 Widowed8.4%  Unlock5.6%
 space5
 Household Size  Unlock2.212.60
 Households32,126  Unlock124,010,992
 Family Households  Unlock17,34180,755,759
     Married couple, w/children29.4%  Unlock30.5%
     Married couple, no children  Unlock47.4%42.9%
 Non Family Households13,738  Unlock43,255,233
     Single householder, w/children  Unlock10.8%15.8%
     Single householder, no children7.5%  Unlock10.8%
Reviews for Walnut Creek    16 Reviews

Apart from the congestion, Walnut Creek is one of the best places in the San Francisco Bay Area to live. It is one of the most compact/walkable cities in the entire area  More

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Over 7 years ago

Almost all of Walnut Creek water comes from Pardee dam through an enclosed pipeline. That water is direct from the high Sierras. Among the best water quality in the  More

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Over 7 years ago

I grew up in Southern California and am no stranger to a more inland California climate. Before moving to WC I lived in San Francisco for 15 years where it is obviously  More

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Reviews for Boulder    55 Reviews

Outside of the university, Boulder had a very distinctive "wealthy hippy" feel. A lot of alternative medicine and a matching ethos. This is changing some among my  More

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We moved here from Texas about 4 years ago and love it here! The amazing sense of community and high regard for the environment are two of the main reasons we love  More

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Over 5 years ago

Most people do much worse than Boulder. I'm the most critical person I've ever met who is never happy or satisfied -- so that's a pretty huge compliment.   More

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