2025 Compare Cities People:
Derby, KS vs Mars, PA

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Highlights
- Mars is 0% more densely populated than Derby.
- People are 51.7% less likely to be married in Mars.
- The Median Age is 19.8 years older in Mars.
 Derby, KSMars, PAUnited States
 Population  Unlock1,310329,725,481
 Female Population50.6%  Unlock50.5%
 Male Population49.4%  Unlock49.5%
 Median Age  Unlock55.438.4
 space3
 Population - 201022,524  Unlock309,327,143
 Population - 2000  Unlock1,746285,036,114
 Population - 199014,699  Unlock251,960,433
 Pop. 2000 to Now  Unlock-7.9%15.6%
 Pop. 1990 to Now71.1%  Unlock30.8%
 space4
 Population Density  Unlock2,781.393.4
 Land Area10.3  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Derby, KSMars, PAUnited States
 Age 0 to 45.5%  Unlock5.9%
 Age 5 to 9  Unlock3.8%6.1%
 Age 10 to 149.1%  Unlock6.6%
 Age 15 to 17  Unlock2.7%3.9%
 Age 18 to 203.3%  Unlock4.0%
 Age 21 to 24  Unlock7.1%5.2%
 Age 25 to 3412.9%  Unlock13.8%
 Age 35 to 44  Unlock6.7%12.9%
 Age 45 to 5410.1%  Unlock12.6%
 Age 55 to 59  Unlock12.7%6.7%
 Age 60 to 644.9%  Unlock6.3%
 Age 65 to 74  Unlock11.6%9.6%
 Age 75 to 845.1%  Unlock4.5%
 Age 85 and over  Unlock4.5%1.9%
 space1
 Race
 Derby, KSMars, PAUnited States
 White82.3%  Unlock59.4%
 Black  Unlock2.4%12.2%
 Asian1.3%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.0%0.4%
 Two or More Races5.7%  Unlock3.2%
 Hispanic  Unlock2.7%18.4%
 space2
 Marriage & Family
 Derby, KSMars, PAUnited States
 Married Population60.3%  Unlock49.8%
     Currently Married  Unlock29.1%48.0%
 Married but Separated1.1%  Unlock1.8%
 Single Population  Unlock70.9%50.2%
 Never Married23.4%  Unlock33.8%
 Divorced  Unlock19.9%10.8%
 Widowed5.8%  Unlock5.6%
 space5
 Household Size  Unlock1.982.60
 Households9,953  Unlock124,010,992
 Family Households  Unlock26780,755,759
     Married couple, w/children37.1%  Unlock30.5%
     Married couple, no children  Unlock33.7%42.9%
 Non Family Households3,170  Unlock43,255,233
     Single householder, w/children  Unlock9.0%15.8%
     Single householder, no children9.0%  Unlock10.8%
Reviews for Derby    3 Reviews

Over 1 years ago

I remember growing up here in the early '80s. I recently visited and the place is still beautiful and larger now with more to see and do. I have already decided to  More

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Over 19 years ago

The Derby parks and recreation department is the best in the plains states. Some of the best water sports, baseball, football, soccer, Adult recreation is good as well.  More

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Over 19 years ago

The climate in Derby (suburb of Wichita, KS) is moderate to warm. Winters are rearly very cold. Zero degrees only at night we have lived here 11 years and only seen 0  More

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Reviews for Mars    1 Reviews

Over 16 years ago

It's a small town but growing. The scenery and weather are nice. The location is just about right. It's not far from Pittsburgh or other cities, towns and activities.  More

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