2026 Compare Cities People:
Longmont, CO vs Flagstaff, AZ

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Highlights
- Flagstaff is 0% more densely populated than Longmont.
- People are 33.4% less likely to be married in Flagstaff.
- The Median Age is 13.7 years younger in Flagstaff.
 Longmont, COFlagstaff, AZUnited States
 Population  Unlock76,228329,725,481
 Female Population50.4%  Unlock50.5%
 Male Population49.6%  Unlock49.5%
 Median Age  Unlock25.838.4
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 Population - 201086,616  Unlock309,327,143
 Population - 2000  Unlock52,894285,036,114
 Population - 199051,555  Unlock251,960,433
 Pop. 2000 to Now  Unlock39.8%15.6%
 Pop. 1990 to Now91.0%  Unlock30.8%
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 Population Density  Unlock1,154.693.4
 Land Area27.6  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
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 Est. Total Population By Age
 Longmont, COFlagstaff, AZUnited States
 Age 0 to 45.1%  Unlock5.9%
 Age 5 to 9  Unlock4.8%6.1%
 Age 10 to 146.3%  Unlock6.6%
 Age 15 to 17  Unlock3.1%3.9%
 Age 18 to 203.4%  Unlock4.0%
 Age 21 to 24  Unlock11.4%5.2%
 Age 25 to 3413.6%  Unlock13.8%
 Age 35 to 44  Unlock10.7%12.9%
 Age 45 to 5412.6%  Unlock12.6%
 Age 55 to 59  Unlock4.1%6.7%
 Age 60 to 646.5%  Unlock6.3%
 Age 65 to 74  Unlock5.8%9.6%
 Age 75 to 844.2%  Unlock4.5%
 Age 85 and over  Unlock0.5%1.9%
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 Race
 Longmont, COFlagstaff, AZUnited States
 White68.3%  Unlock59.4%
 Black  Unlock1.5%12.2%
 Asian3.3%  Unlock5.6%
 Native American  Unlock8.6%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.4%0.4%
 Two or More Races3.2%  Unlock3.2%
 Hispanic  Unlock18.9%18.4%
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 Marriage & Family
 Longmont, COFlagstaff, AZUnited States
 Married Population49.6%  Unlock49.8%
     Currently Married  Unlock32.2%48.0%
 Married but Separated1.2%  Unlock1.8%
 Single Population  Unlock67.0%50.2%
 Never Married31.8%  Unlock33.8%
 Divorced  Unlock9.0%10.8%
 Widowed5.2%  Unlock5.6%
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 Household Size  Unlock2.402.60
 Households39,237  Unlock124,010,992
 Family Households  Unlock13,51980,755,759
     Married couple, w/children30.3%  Unlock30.5%
     Married couple, no children  Unlock41.3%42.9%
 Non Family Households14,445  Unlock43,255,233
     Single householder, w/children  Unlock15.5%15.8%
     Single householder, no children9.4%  Unlock10.8%
Reviews for Longmont    19 Reviews

I lived here for 4 years and it's pretty nice. It gets cold and stays cold for a good 8 months, but other than that I loved it. There are a lot of amenities. It is  More

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Over 7 years ago

I just move from other state to Longmont. In my opinion Longmont is one of the safest city in US which is have a low crime, its great city to raised family .Has a great  More

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Fantastic place to live. Four golf courses, many parks, 10 minutes to the foothills and 40 minutes from the Rockies, the location is hard to beat if you want to be 45  More

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Reviews for Flagstaff    50 Reviews

Amber · 

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 · 

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

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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

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