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2025 Compare Cities People:
Billerica, MA vs Simi Valley, CA

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Highlights
- Simi Valley is 0% more densely populated than Billerica.
- People are 4.4% less likely to be married in Simi Valley.
- The Median Age is 2.0 years younger in Simi Valley.
 Billerica, MASimi Valley, CAUnited States
 Population  Unlock126,809329,725,481
 Female Population49.1%  Unlock50.5%
 Male Population50.9%  Unlock49.5%
 Median Age  Unlock4138.4
 space3
 Population - 201040,419  Unlock309,327,143
 Population - 2000  Unlock111,351285,036,114
 Population - 199037,609  Unlock251,960,433
 Pop. 2000 to Now  Unlock12.4%15.6%
 Pop. 1990 to Now14.4%  Unlock30.8%
 space4
 Population Density  Unlock3,054.093.4
 Land Area25.6  Unlock3,531,905.4
 Water Area  Unlock0.7264,836.8
 space
 Est. Total Population By Age
 Billerica, MASimi Valley, CAUnited States
 Age 0 to 44.0%  Unlock5.9%
 Age 5 to 9  Unlock4.8%6.1%
 Age 10 to 145.5%  Unlock6.6%
 Age 15 to 17  Unlock4.2%3.9%
 Age 18 to 202.8%  Unlock4.0%
 Age 21 to 24  Unlock4.6%5.2%
 Age 25 to 3414.4%  Unlock13.8%
 Age 35 to 44  Unlock12.5%12.9%
 Age 45 to 5415.2%  Unlock12.6%
 Age 55 to 59  Unlock7.7%6.7%
 Age 60 to 647.1%  Unlock6.3%
 Age 65 to 74  Unlock9.2%9.6%
 Age 75 to 844.3%  Unlock4.5%
 Age 85 and over  Unlock2.0%1.9%
 space1
 Race
 Billerica, MASimi Valley, CAUnited States
 White79.6%  Unlock59.4%
 Black  Unlock1.3%12.2%
 Asian7.2%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races1.9%  Unlock3.2%
 Hispanic  Unlock25.8%18.4%
 space2
 Marriage & Family
 Billerica, MASimi Valley, CAUnited States
 Married Population52.8%  Unlock49.8%
     Currently Married  Unlock49.1%48.0%
 Married but Separated1.5%  Unlock1.8%
 Single Population  Unlock49.5%50.2%
 Never Married33.4%  Unlock33.8%
 Divorced  Unlock10.1%10.8%
 Widowed4.9%  Unlock5.6%
 space5
 Household Size  Unlock2.872.60
 Households15,498  Unlock124,010,992
 Family Households  Unlock30,96580,755,759
     Married couple, w/children33.2%  Unlock30.5%
     Married couple, no children  Unlock43.9%42.9%
 Non Family Households4,146  Unlock43,255,233
     Single householder, w/children  Unlock10.9%15.8%
     Single householder, no children15.5%  Unlock10.8%
Voting
Reviews for Billerica    4 Reviews
Rita · Billerica, MA
No complaints
Over 15 years ago

I'm really not complaining about living here. My husband and I are retired and I think the cost of living is higher here than many other places. We are trying to agree  More

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jn · Andover, MA
Getting worse
Over 16 years ago

Having lived in 3rd world countries in South America I can tell you that the entire area is headed in the same direction. Congestion is increasing, traffic is getting  More

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Rahmbo · Brookline, MA
Quick Note
Over 16 years ago

Having lived in 3rd world countries down in South America I can honestly say that the entire area is headed in the same direction. Congestion is increasing, traffic is  More

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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

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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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Learn More About Billerica, Massachusetts
Overview
Cost of Living
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Voting
Learn More About Simi Valley, California
Overview
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