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2026 Compare Cities People:
Simi Valley, CA vs San Marcos, TX

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Highlights
- San Marcos is 0% more densely populated than Simi Valley.
- People are 44.9% less likely to be married in San Marcos.
- The Median Age is 16.1 years younger in San Marcos.
 Simi Valley, CASan Marcos, TXUnited States
 Population  Unlock64,812329,725,481
 Female Population51.0%  Unlock50.5%
 Male Population49.1%  Unlock49.5%
 Median Age  Unlock24.938.4
 space3
 Population - 2010124,424  Unlock309,327,143
 Population - 2000  Unlock34,733285,036,114
 Population - 1990100,217  Unlock251,960,433
 Pop. 2000 to Now  Unlock91.0%15.6%
 Pop. 1990 to Now24.9%  Unlock30.8%
 space4
 Population Density  Unlock1,905.393.4
 Land Area41.5  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 Simi Valley, CASan Marcos, TXUnited States
 Age 0 to 45.2%  Unlock5.9%
 Age 5 to 9  Unlock3.3%6.1%
 Age 10 to 146.6%  Unlock6.6%
 Age 15 to 17  Unlock2.4%3.9%
 Age 18 to 203.8%  Unlock4.0%
 Age 21 to 24  Unlock20.5%5.2%
 Age 25 to 3413.3%  Unlock13.8%
 Age 35 to 44  Unlock9.6%12.9%
 Age 45 to 5414.8%  Unlock12.6%
 Age 55 to 59  Unlock3.4%6.7%
 Age 60 to 646.7%  Unlock6.3%
 Age 65 to 74  Unlock6.1%9.6%
 Age 75 to 844.5%  Unlock4.5%
 Age 85 and over  Unlock1.3%1.9%
 space1
 Race
 Simi Valley, CASan Marcos, TXUnited States
 White57.6%  Unlock59.4%
 Black  Unlock6.6%12.2%
 Asian11.1%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock1.4%0.4%
 Two or More Races3.8%  Unlock3.2%
 Hispanic  Unlock40.9%18.4%
 space2
 Marriage & Family
 Simi Valley, CASan Marcos, TXUnited States
 Married Population50.5%  Unlock49.8%
     Currently Married  Unlock26.2%48.0%
 Married but Separated1.4%  Unlock1.8%
 Single Population  Unlock72.2%50.2%
 Never Married33.6%  Unlock33.8%
 Divorced  Unlock8.1%10.8%
 Widowed5.9%  Unlock5.6%
 space5
 Household Size  Unlock2.292.60
 Households43,893  Unlock124,010,992
 Family Households  Unlock11,05280,755,759
     Married couple, w/children32.3%  Unlock30.5%
     Married couple, no children  Unlock40.8%42.9%
 Non Family Households12,928  Unlock43,255,233
     Single householder, w/children  Unlock16.7%15.8%
     Single householder, no children12.8%  Unlock10.8%
Voting
Reviews for Simi Valley    22 Reviews
Arnold · Simi Valley, CA
Growing Challenges- housing costs and still the "
Over 5 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

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Joseph · Simi Valley, CA
Great city(Little Pricey)
Over 16 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 17 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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Reviews for San Marcos    6 Reviews
Randall · San Marcos, TX
Wish I had researched more before buying here
Over 3 years ago

An area with so much potential and existing natural beauty.Sadly bad urban planning is clearly obvious.Looks like fun for tens of thousands of students.However for the  More

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Elizabeth · San Marcos, TX
No Place Like Home
Over 17 years ago

San Marcos has the most beautiful people and places that I have ever seen throughout my travels. I love this city so much that I decided to settle down here and start a  More

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Alisha · Sandpoint, ID
Fun college town
Over 18 years ago

I spent several summers and a couple winters in San Marcos during my formidable years and really have to tell those interested about what a nice town it is. The best  More

   |    Reply

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Learn More About Simi Valley, California
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Learn More About San Marcos, Texas
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