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2025 Compare Cities People:
Simi Valley, CA vs Placentia, CA

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Highlights
- Placentia is 0% more densely populated than Simi Valley.
- People are 4.1% more likely to be married in Placentia.
- The Median Age is 4.1 years younger in Placentia.
 Simi Valley, CAPlacentia, CAUnited States
 Population  Unlock51,951329,725,481
 Female Population51.0%  Unlock50.5%
 Male Population49.1%  Unlock49.5%
 Median Age  Unlock36.938.4
 space3
 Population - 2010124,424  Unlock309,327,143
 Population - 2000  Unlock46,488285,036,114
 Population - 1990100,217  Unlock251,960,433
 Pop. 2000 to Now  Unlock10.8%15.6%
 Pop. 1990 to Now24.9%  Unlock30.8%
 space4
 Population Density  Unlock7,854.793.4
 Land Area41.5  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Simi Valley, CAPlacentia, CAUnited States
 Age 0 to 45.2%  Unlock5.9%
 Age 5 to 9  Unlock6.2%6.1%
 Age 10 to 146.6%  Unlock6.6%
 Age 15 to 17  Unlock4.8%3.9%
 Age 18 to 203.8%  Unlock4.0%
 Age 21 to 24  Unlock6.3%5.2%
 Age 25 to 3413.3%  Unlock13.8%
 Age 35 to 44  Unlock13.0%12.9%
 Age 45 to 5414.8%  Unlock12.6%
 Age 55 to 59  Unlock6.2%6.7%
 Age 60 to 646.7%  Unlock6.3%
 Age 65 to 74  Unlock7.8%9.6%
 Age 75 to 844.5%  Unlock4.5%
 Age 85 and over  Unlock1.8%1.9%
 space1
 Race
 Simi Valley, CAPlacentia, CAUnited States
 White57.6%  Unlock59.4%
 Black  Unlock2.5%12.2%
 Asian11.1%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.5%0.4%
 Two or More Races3.8%  Unlock3.2%
 Hispanic  Unlock39.1%18.4%
 space2
 Marriage & Family
 Simi Valley, CAPlacentia, CAUnited States
 Married Population50.5%  Unlock49.8%
     Currently Married  Unlock50.7%48.0%
 Married but Separated1.4%  Unlock1.8%
 Single Population  Unlock47.5%50.2%
 Never Married33.6%  Unlock33.8%
 Divorced  Unlock8.6%10.8%
 Widowed5.9%  Unlock5.6%
 space5
 Household Size  Unlock3.142.60
 Households43,893  Unlock124,010,992
 Family Households  Unlock12,62380,755,759
     Married couple, w/children32.3%  Unlock30.5%
     Married couple, no children  Unlock38.5%42.9%
 Non Family Households12,928  Unlock43,255,233
     Single householder, w/children  Unlock11.1%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 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

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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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Reviews for Placentia    6 Reviews
Ken · Melbourne, FL
CORRUPT - blocks critical comments on Facebook.
Over 4 years ago

I lived in that city for almost 10 years and recently found out that both their city government and their police force are blocking people from leaving bad reviews of  More

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Jerry · Placentia, CA
Living in Placentia
Over 14 years ago

PLACENTIA IS A GREAT PLACE TO LIVE. BEEN HERE SINCE 1980. EASY ACCESS TO FREEWAYS, PLENTY OF COMMERCIAL AND INDUSTRIAL BUSINESSES AROUND FOR EMPLOYMENT. NEARBY--GOLF  More

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Bp · Placentia, CA
Cheap Housing
Over 15 years ago

If you rent, Placentia's not bad. I haven't noticed too much crime but there are quite a few reasonable apartments. Being close to a California State School has its  More

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Learn More About Simi Valley, California
Overview
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Learn More About Placentia, California
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