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2025 Compare Cities People:
Rancho Santa Margarita, CA vs Simi Valley, CA

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Highlights
- Simi Valley is 0% more densely populated than Rancho Santa Margarita.
- People are 15.0% less likely to be married in Simi Valley.
- The Median Age is 1.3 years older in Simi Valley.
 Rancho Santa Margarita, CASimi Valley, CAUnited States
 Population  Unlock126,809329,725,481
 Female Population51.0%  Unlock50.5%
 Male Population49.0%  Unlock49.5%
 Median Age  Unlock4138.4
 space3
 Population - 201047,877  Unlock309,327,143
 Population - 2000  Unlock111,351285,036,114
 Population - 199011,390  Unlock251,960,433
 Pop. 2000 to Now  Unlock12.4%15.6%
 Pop. 1990 to Now317.6%  Unlock30.8%
 space4
 Population Density  Unlock3,054.093.4
 Land Area12.9  Unlock3,531,905.4
 Water Area  Unlock0.7264,836.8
 space
 Est. Total Population By Age
 Rancho Santa Margarita, CASimi Valley, CAUnited States
 Age 0 to 46.4%  Unlock5.9%
 Age 5 to 9  Unlock4.8%6.1%
 Age 10 to 147.1%  Unlock6.6%
 Age 15 to 17  Unlock4.2%3.9%
 Age 18 to 203.6%  Unlock4.0%
 Age 21 to 24  Unlock4.6%5.2%
 Age 25 to 3411.8%  Unlock13.8%
 Age 35 to 44  Unlock12.5%12.9%
 Age 45 to 5416.1%  Unlock12.6%
 Age 55 to 59  Unlock7.7%6.7%
 Age 60 to 647.3%  Unlock6.3%
 Age 65 to 74  Unlock9.2%9.6%
 Age 75 to 842.5%  Unlock4.5%
 Age 85 and over  Unlock2.0%1.9%
 space1
 Race
 Rancho Santa Margarita, CASimi Valley, CAUnited States
 White60.5%  Unlock59.4%
 Black  Unlock1.3%12.2%
 Asian11.1%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races5.5%  Unlock3.2%
 Hispanic  Unlock25.8%18.4%
 space2
 Marriage & Family
 Rancho Santa Margarita, CASimi Valley, CAUnited States
 Married Population59.4%  Unlock49.8%
     Currently Married  Unlock49.1%48.0%
 Married but Separated0.8%  Unlock1.8%
 Single Population  Unlock49.5%50.2%
 Never Married28.2%  Unlock33.8%
 Divorced  Unlock10.1%10.8%
 Widowed2.9%  Unlock5.6%
 space5
 Household Size  Unlock2.872.60
 Households16,825  Unlock124,010,992
 Family Households  Unlock30,96580,755,759
     Married couple, w/children41.8%  Unlock30.5%
     Married couple, no children  Unlock43.9%42.9%
 Non Family Households3,817  Unlock43,255,233
     Single householder, w/children  Unlock10.9%15.8%
     Single householder, no children10.0%  Unlock10.8%
Voting
Reviews for Rancho Santa Margarita    13 Reviews
Adele · Fort Collins, CO
RSM - Beautiful, quiet town.
Over 1 years ago

This page provides little information on RSM. I see they keep describing the area as "outside of Los Angeles." Culturally, it is so far from Los Angeles (I lived in LA,  More

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Rosemary · Trabuco Canyon, CA
Lovely
Over 10 years ago

The weather here is amazing. We get a few hot days in the summer but it cools down in the evening. I love being able to sleep with the windows  More

   |    Reply
Julia · Rancho Santa Margarita, CA
Best little city in the O.C.
Over 10 years ago

This is the best place to live in South Orange County with mild temperatures, low crime, great schools and family orientated. RSM is a city that sits in a pocket backing  More

   |    Reply

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Reviews for Simi Valley    22 Reviews
Arnold · Simi Valley, CA
Growing Challenges- housing costs and still the "
Over 4 years ago

I've live in two different neighborhoods since fall of 1996 and depending on the neighborhood you're quality of life experience will vary. The price of housing is such  More

   |    Reply
Joseph · Simi Valley, CA
Great city(Little Pricey)
Over 15 years ago

I have lived in Simi Valley for 23 Years. I love it here but due to the cost of living am looking to relocate to another state/City where my money will go further. Simi  More

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john · Simi Valley, CA
good place to live
Over 16 years ago

simi valley is a very nice place to live within the shadow of the LA metro area. it has low crime and reasonable housing costs with ready access to indoor and outdoor  More

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Learn More About Rancho Santa Margarita, California
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Learn More About Simi Valley, California
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