2025 Compare Cities People:
Rapid City, SD vs Rocklin, CA

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Highlights
- Rocklin is 0% more densely populated than Rapid City.
- People are 25.7% more likely to be married in Rocklin.
- The Median Age is 1.0 years younger in Rocklin.
 Rapid City, SDRocklin, CAUnited States
 Population  Unlock70,317329,725,481
 Female Population49.6%  Unlock50.5%
 Male Population50.4%  Unlock49.5%
 Median Age  Unlock37.138.4
 space3
 Population - 201069,138  Unlock309,327,143
 Population - 2000  Unlock36,330285,036,114
 Population - 199054,523  Unlock251,960,433
 Pop. 2000 to Now  Unlock93.1%15.6%
 Pop. 1990 to Now44.6%  Unlock30.8%
 space4
 Population Density  Unlock3,549.693.4
 Land Area54.5  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Rapid City, SDRocklin, CAUnited States
 Age 0 to 46.7%  Unlock5.9%
 Age 5 to 9  Unlock7.2%6.1%
 Age 10 to 146.4%  Unlock6.6%
 Age 15 to 17  Unlock5.0%3.9%
 Age 18 to 203.7%  Unlock4.0%
 Age 21 to 24  Unlock5.5%5.2%
 Age 25 to 3414.0%  Unlock13.8%
 Age 35 to 44  Unlock15.2%12.9%
 Age 45 to 5410.6%  Unlock12.6%
 Age 55 to 59  Unlock6.0%6.7%
 Age 60 to 646.5%  Unlock6.3%
 Age 65 to 74  Unlock8.0%9.6%
 Age 75 to 845.1%  Unlock4.5%
 Age 85 and over  Unlock1.7%1.9%
 space1
 Race
 Rapid City, SDRocklin, CAUnited States
 White77.0%  Unlock59.4%
 Black  Unlock1.7%12.2%
 Asian1.3%  Unlock5.6%
 Native American  Unlock0.4%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.7%0.4%
 Two or More Races5.6%  Unlock3.2%
 Hispanic  Unlock13.9%18.4%
 space2
 Marriage & Family
 Rapid City, SDRocklin, CAUnited States
 Married Population45.9%  Unlock49.8%
     Currently Married  Unlock56.6%48.0%
 Married but Separated1.2%  Unlock1.8%
 Single Population  Unlock42.3%50.2%
 Never Married32.5%  Unlock33.8%
 Divorced  Unlock9.1%10.8%
 Widowed6.6%  Unlock5.6%
 space5
 Household Size  Unlock2.862.60
 Households30,737  Unlock124,010,992
 Family Households  Unlock17,66080,755,759
     Married couple, w/children27.2%  Unlock30.5%
     Married couple, no children  Unlock39.2%42.9%
 Non Family Households13,767  Unlock43,255,233
     Single householder, w/children  Unlock8.5%15.8%
     Single householder, no children8.1%  Unlock10.8%
Reviews for Rapid City    31 Reviews

I have lived in this city for the last three and half years and I can't stand it!! Let me spell it out for you, but to be fair, let me give you the Pros first:  More

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Unless you made your pension out of state or already bought a home you can't afford to liver there. Rapid City is gray in winter.  More

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Over 4 years ago

I've lived in the city 5 years a loved  More

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Reviews for Rocklin    11 Reviews

I have had the blessed opportunity to be born and raised in Rocklin, CA. Rocklin is truly one of the best towns to live in, in the sacramento area. It's a clean, smaller  More

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Over 6 years ago

I've lived in the Sacramento vicinity for 12 years, and in Northern California my entire life (I grew up in the San Jose area). The area of Rocklin I am living in is the  More

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Over 14 years ago

seriously? Let me tell you what I have observed since moving here from Gilbert, AZ 3 months ago.I know I am going to take grief for this so go ahead and let it fly,  More

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