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2025 Compare Cities People:
Flagstaff, AZ vs Boulder, UT

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Highlights
- Boulder is 0% more densely populated than Flagstaff.
- People are 104.8% more likely to be married in Boulder.
- The Median Age is 17.1 years older in Boulder.
 Flagstaff, AZBoulder, UTUnited States
 Population  Unlock387329,725,481
 Female Population49.9%  Unlock50.5%
 Male Population50.1%  Unlock49.5%
 Median Age  Unlock42.938.4
 space3
 Population - 201066,102  Unlock309,327,143
 Population - 2000  Unlock180285,036,114
 Population - 199045,857  Unlock251,960,433
 Pop. 2000 to Now  Unlock35.0%15.6%
 Pop. 1990 to Now61.2%  Unlock30.8%
 space4
 Population Density  Unlock18.593.4
 Land Area66.0  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Flagstaff, AZBoulder, UTUnited States
 Age 0 to 44.7%  Unlock5.9%
 Age 5 to 9  Unlock8.5%6.1%
 Age 10 to 145.3%  Unlock6.6%
 Age 15 to 17  Unlock0.0%3.9%
 Age 18 to 2019.3%  Unlock4.0%
 Age 21 to 24  Unlock0.8%5.2%
 Age 25 to 3415.5%  Unlock13.8%
 Age 35 to 44  Unlock22.0%12.9%
 Age 45 to 548.1%  Unlock12.6%
 Age 55 to 59  Unlock5.7%6.7%
 Age 60 to 644.3%  Unlock6.3%
 Age 65 to 74  Unlock23.3%9.6%
 Age 75 to 842.1%  Unlock4.5%
 Age 85 and over  Unlock0.5%1.9%
 space1
 Race
 Flagstaff, AZBoulder, UTUnited States
 White62.6%  Unlock59.4%
 Black  Unlock0.0%12.2%
 Asian2.5%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.2%  Unlock0.2%
 Other  Unlock0.0%0.4%
 Two or More Races5.2%  Unlock3.2%
 Hispanic  Unlock8.5%18.4%
 space2
 Marriage & Family
 Flagstaff, AZBoulder, UTUnited States
 Married Population33.0%  Unlock49.8%
     Currently Married  Unlock67.6%48.0%
 Married but Separated0.8%  Unlock1.8%
 Single Population  Unlock32.4%50.2%
 Never Married56.1%  Unlock33.8%
 Divorced  Unlock13.4%10.8%
 Widowed1.8%  Unlock5.6%
 space5
 Household Size  Unlock2.432.60
 Households26,450  Unlock124,010,992
 Family Households  Unlock11280,755,759
     Married couple, w/children33.2%  Unlock30.5%
     Married couple, no children  Unlock52.7%42.9%
 Non Family Households12,931  Unlock43,255,233
     Single householder, w/children  Unlock5.4%15.8%
     Single householder, no children10.0%  Unlock10.8%
Voting
Reviews for Flagstaff    50 Reviews
Amber · 
Flagstaff is ideal for young families
Over 2 years ago

Flagstaff is absolutely the perfect place to call home. Especially for families. 4 perfectly balanced seasons. None too extreme and all beautiful. Ridiculously safe!  More

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Leah · 
Cost of living is outrageous
Over 3 years ago

I've lived here for one year and have to move because the cost to rent here is astronomical. I've been paying $2550/month and now for a comparable home it is $2900 and  More

   |    Reply
Amanda · Flagstaff, AZ
Small city feel and beautiful outdoors
Over 6 years ago

Every place depends on what you are looking for. So I will say a bit about me so you can assess where the review is coming from. I am a professional, single, female  More

   |    Reply

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Reviews for Boulder    0 Reviews

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