2025 Compare Cities People:
Boulder, CO vs Phoenix, AZ

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Highlights
- Phoenix is 0% more densely populated than Boulder.
- People are 39.8% more likely to be married in Phoenix.
- The Median Age is 5.2 years older in Phoenix.
 Boulder, COPhoenix, AZUnited States
 Population  Unlock1,591,119329,725,481
 Female Population48.5%  Unlock50.5%
 Male Population51.5%  Unlock49.5%
 Median Age  Unlock34.138.4
 space3
 Population - 201097,724  Unlock309,327,143
 Population - 2000  Unlock1,321,045285,036,114
 Population - 199083,312  Unlock251,960,433
 Pop. 2000 to Now  Unlock29.3%15.6%
 Pop. 1990 to Now29.2%  Unlock30.8%
 space4
 Population Density  Unlock3,073.693.4
 Land Area26.3  Unlock3,531,905.4
 Water Area  Unlock1.3264,836.8
 space
 Est. Total Population By Age
 Boulder, COPhoenix, AZUnited States
 Age 0 to 42.7%  Unlock5.9%
 Age 5 to 9  Unlock6.8%6.1%
 Age 10 to 143.6%  Unlock6.6%
 Age 15 to 17  Unlock4.3%3.9%
 Age 18 to 2016.2%  Unlock4.0%
 Age 21 to 24  Unlock5.7%5.2%
 Age 25 to 3416.3%  Unlock13.8%
 Age 35 to 44  Unlock13.9%12.9%
 Age 45 to 5410.3%  Unlock12.6%
 Age 55 to 59  Unlock6.0%6.7%
 Age 60 to 644.2%  Unlock6.3%
 Age 65 to 74  Unlock7.0%9.6%
 Age 75 to 843.1%  Unlock4.5%
 Age 85 and over  Unlock1.2%1.9%
 space1
 Race
 Boulder, COPhoenix, AZUnited States
 White78.3%  Unlock59.4%
 Black  Unlock6.9%12.2%
 Asian5.9%  Unlock5.6%
 Native American  Unlock1.6%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.3%0.4%
 Two or More Races3.5%  Unlock3.2%
 Hispanic  Unlock42.7%18.4%
 space2
 Marriage & Family
 Boulder, COPhoenix, AZUnited States
 Married Population31.9%  Unlock49.8%
     Currently Married  Unlock42.5%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock55.3%50.2%
 Never Married56.1%  Unlock33.8%
 Divorced  Unlock12.2%10.8%
 Widowed2.5%  Unlock5.6%
 space5
 Household Size  Unlock2.712.60
 Households42,610  Unlock124,010,992
 Family Households  Unlock368,58880,755,759
     Married couple, w/children33.3%  Unlock30.5%
     Married couple, no children  Unlock33.6%42.9%
 Non Family Households25,269  Unlock43,255,233
     Single householder, w/children  Unlock22.5%15.8%
     Single householder, no children8.5%  Unlock10.8%
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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Reviews for Phoenix    449 Reviews

Over 1 years ago

As someone that has worked in Phoenix for close to 20 years now. There is great areas to eat at, great opportunities for premium small businesses to set up shop and even  More

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Over 1 years ago

Phoenix is a city of potential and definitely has a bad reputation that is not completely deserved all throughout the city itself. There is tons of things to do, places  More

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Phoenix has tons of the best places to shop and eat at bar none due to it being the big city. Downtown is definitely underrated. There also is some nice new developments  More

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