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2025 Compare Cities People:
Castaic, CA vs Signal Hill, CA

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Highlights
- Signal Hill is 0% more densely populated than Castaic.
- People are 31.4% less likely to be married in Signal Hill.
- The Median Age is 2.3 years younger in Signal Hill.
 Castaic, CASignal Hill, CAUnited States
 Population  Unlock11,780329,725,481
 Female Population50.0%  Unlock50.5%
 Male Population50.0%  Unlock49.5%
 Median Age  Unlock35.938.4
 space3
 Population - 201018,134  Unlock309,327,143
 Population - 2000  Unlock9,333285,036,114
 Population - 19907,647  Unlock251,960,433
 Pop. 2000 to Now  Unlock20.9%15.6%
 Pop. 1990 to Now149.0%  Unlock30.8%
 space4
 Population Density  Unlock5,376.593.4
 Land Area7.3  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Castaic, CASignal Hill, CAUnited States
 Age 0 to 46.5%  Unlock5.9%
 Age 5 to 9  Unlock4.6%6.1%
 Age 10 to 148.1%  Unlock6.6%
 Age 15 to 17  Unlock1.5%3.9%
 Age 18 to 203.0%  Unlock4.0%
 Age 21 to 24  Unlock4.5%5.2%
 Age 25 to 3413.4%  Unlock13.8%
 Age 35 to 44  Unlock14.1%12.9%
 Age 45 to 5415.2%  Unlock12.6%
 Age 55 to 59  Unlock5.0%6.7%
 Age 60 to 646.1%  Unlock6.3%
 Age 65 to 74  Unlock7.7%9.6%
 Age 75 to 842.5%  Unlock4.5%
 Age 85 and over  Unlock0.7%1.9%
 space1
 Race
 Castaic, CASignal Hill, CAUnited States
 White49.0%  Unlock59.4%
 Black  Unlock10.5%12.2%
 Asian11.9%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.3%0.4%
 Two or More Races7.3%  Unlock3.2%
 Hispanic  Unlock35.9%18.4%
 space2
 Marriage & Family
 Castaic, CASignal Hill, CAUnited States
 Married Population59.6%  Unlock49.8%
     Currently Married  Unlock39.6%48.0%
 Married but Separated1.2%  Unlock1.8%
 Single Population  Unlock59.1%50.2%
 Never Married28.3%  Unlock33.8%
 Divorced  Unlock10.4%10.8%
 Widowed5.1%  Unlock5.6%
 space5
 Household Size  Unlock2.562.60
 Households5,656  Unlock124,010,992
 Family Households  Unlock2,58580,755,759
     Married couple, w/children41.3%  Unlock30.5%
     Married couple, no children  Unlock37.1%42.9%
 Non Family Households929  Unlock43,255,233
     Single householder, w/children  Unlock19.5%15.8%
     Single householder, no children11.1%  Unlock10.8%
Voting
Reviews for Castaic    3 Reviews
Plasma · Castaic, CA
Pros and Cons
Over 9 years ago

I've lived in northern Castaic for 14 years so this review is for northern Castaic Pros: convenient freeway access, boating on Lake Castaic, lots of gas stations,  More

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Steve · Castaic, CA
Castaic
Over 11 years ago

Formerly a "truck stop" town, Castaic is the last town before going over the Grapevine, heading North on I-5 towards San Francisco. The town is unincorporated and sits  More

   |    Reply
Jayne · Valencia, CA
Safe to live?
Over 12 years ago

I currently live in Valencia. Before I consider purchasing a house in Castaic off Lake Hughes Rd and closer to the lake, is it safe to live in this neighborhood? Any  More

   |    Reply

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