2026 Compare Cities People:
Simi Valley, CA vs Louisville, CO

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Highlights
- Louisville is 0% more densely populated than Simi Valley.
- People are 12.7% more likely to be married in Louisville.
- The Median Age is 1.5 years older in Louisville.
 Simi Valley, CALouisville, COUnited States
 Population  Unlock21,091329,725,481
 Female Population51.0%  Unlock50.5%
 Male Population49.1%  Unlock49.5%
 Median Age  Unlock42.538.4
 space3
 Population - 2010124,424  Unlock309,327,143
 Population - 2000  Unlock18,937285,036,114
 Population - 1990100,217  Unlock251,960,433
 Pop. 2000 to Now  Unlock0.7%15.6%
 Pop. 1990 to Now24.9%  Unlock30.8%
 space4
 Population Density  Unlock2,644.093.4
 Land Area41.5  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 Simi Valley, CALouisville, COUnited States
 Age 0 to 45.2%  Unlock5.9%
 Age 5 to 9  Unlock6.8%6.1%
 Age 10 to 146.6%  Unlock6.6%
 Age 15 to 17  Unlock4.3%3.9%
 Age 18 to 203.8%  Unlock4.0%
 Age 21 to 24  Unlock3.4%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  Unlock8.6%6.7%
 Age 60 to 646.7%  Unlock6.3%
 Age 65 to 74  Unlock9.0%9.6%
 Age 75 to 844.5%  Unlock4.5%
 Age 85 and over  Unlock2.3%1.9%
 space1
 Race
 Simi Valley, CALouisville, COUnited States
 White57.6%  Unlock59.4%
 Black  Unlock0.6%12.2%
 Asian11.1%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races3.8%  Unlock3.2%
 Hispanic  Unlock8.8%18.4%
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 Marriage & Family
 Simi Valley, CALouisville, COUnited States
 Married Population50.5%  Unlock49.8%
     Currently Married  Unlock56.6%48.0%
 Married but Separated1.4%  Unlock1.8%
 Single Population  Unlock43.1%50.2%
 Never Married33.6%  Unlock33.8%
 Divorced  Unlock10.9%10.8%
 Widowed5.9%  Unlock5.6%
 space5
 Household Size  Unlock2.502.60
 Households43,893  Unlock124,010,992
 Family Households  Unlock5,51980,755,759
     Married couple, w/children32.3%  Unlock30.5%
     Married couple, no children  Unlock43.2%42.9%
 Non Family Households12,928  Unlock43,255,233
     Single householder, w/children  Unlock12.2%15.8%
     Single householder, no children12.8%  Unlock10.8%
Reviews for Simi Valley    22 Reviews

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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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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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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Start Your Review of Simi Valley

Reviews for Louisville    3 Reviews

Louisville, CO has been a tremendous place for our family (2 kids, 9 and 12) to live. Small town living/values with nearly no crime, good locally owned  More

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I've lived in Louisville, Colo. for 11 years [and in the Front Range area, off & on, for more than 33 yrs.]. In my opinion, Louisville is scarcely affordable for  More

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Over 20 years ago

Louisville is a great place to live, it was rated in Money magazine has one of the best places, low crime, high education, community value, sense of pride. Home prices  More

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