2025 Compare Cities People:
Mars, PA vs Grass Valley, CA

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Highlights
- Grass Valley is 0% more densely populated than Mars.
- People are 20.9% more likely to be married in Grass Valley.
- The Median Age is 8.4 years younger in Grass Valley.
 Mars, PAGrass Valley, CAUnited States
 Population  Unlock13,550329,725,481
 Female Population55.2%  Unlock50.5%
 Male Population44.8%  Unlock49.5%
 Median Age  Unlock4738.4
 space3
 Population - 20101,699  Unlock309,327,143
 Population - 2000  Unlock10,922285,036,114
 Population - 19901,713  Unlock251,960,433
 Pop. 2000 to Now  Unlock16.9%15.6%
 Pop. 1990 to Now-6.1%  Unlock30.8%
 space4
 Population Density  Unlock2,581.493.4
 Land Area0.5  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Mars, PAGrass Valley, CAUnited States
 Age 0 to 41.5%  Unlock5.9%
 Age 5 to 9  Unlock5.3%6.1%
 Age 10 to 145.5%  Unlock6.6%
 Age 15 to 17  Unlock1.6%3.9%
 Age 18 to 201.4%  Unlock4.0%
 Age 21 to 24  Unlock4.2%5.2%
 Age 25 to 3410.6%  Unlock13.8%
 Age 35 to 44  Unlock12.5%12.9%
 Age 45 to 548.6%  Unlock12.6%
 Age 55 to 59  Unlock6.6%6.7%
 Age 60 to 6412.7%  Unlock6.3%
 Age 65 to 74  Unlock13.9%9.6%
 Age 75 to 8410.6%  Unlock4.5%
 Age 85 and over  Unlock7.6%1.9%
 space1
 Race
 Mars, PAGrass Valley, CAUnited States
 White94.8%  Unlock59.4%
 Black  Unlock0.5%12.2%
 Asian0.0%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races0.0%  Unlock3.2%
 Hispanic  Unlock11.0%18.4%
 space2
 Marriage & Family
 Mars, PAGrass Valley, CAUnited States
 Married Population29.1%  Unlock49.8%
     Currently Married  Unlock32.9%48.0%
 Married but Separated0.0%  Unlock1.8%
 Single Population  Unlock64.8%50.2%
 Never Married35.0%  Unlock33.8%
 Divorced  Unlock22.3%10.8%
 Widowed16.0%  Unlock5.6%
 space5
 Household Size  Unlock1.992.60
 Households615  Unlock124,010,992
 Family Households  Unlock2,89080,755,759
     Married couple, w/children27.0%  Unlock30.5%
     Married couple, no children  Unlock33.7%42.9%
 Non Family Households348  Unlock43,255,233
     Single householder, w/children  Unlock24.9%15.8%
     Single householder, no children30.3%  Unlock10.8%
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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Reviews for Grass Valley    15 Reviews

I've lived many places in California. I've now lived in Grass Valley for 2 years. Grass Valley and it's sister Nevada City are adorable little towns full of history and  More

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Grass valley has become a sad place to live. I was born and raised here and can no longer afford to raise my small family here. Look up the median annual wage and the  More

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I'm 25 years old and I've lived in this town all of my life, and I'm saving every single dollar I make to leave here and never come back. It's a shame, because at one  More

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