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2025 Compare Cities People:
Antioch, CA vs San Marcos, CA

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Highlights
- San Marcos is 0% more densely populated than Antioch.
- People are 21.1% more likely to be married in San Marcos.
- The Median Age is 1.4 years younger in San Marcos.
 Antioch, CASan Marcos, CAUnited States
 Population  Unlock94,313329,725,481
 Female Population51.7%  Unlock50.5%
 Male Population48.4%  Unlock49.5%
 Median Age  Unlock35.638.4
 space3
 Population - 2010103,062  Unlock309,327,143
 Population - 2000  Unlock54,977285,036,114
 Population - 199062,195  Unlock251,960,433
 Pop. 2000 to Now  Unlock77.3%15.6%
 Pop. 1990 to Now79.4%  Unlock30.8%
 space4
 Population Density  Unlock3,872.393.4
 Land Area29.3  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Antioch, CASan Marcos, CAUnited States
 Age 0 to 45.7%  Unlock5.9%
 Age 5 to 9  Unlock8.0%6.1%
 Age 10 to 147.2%  Unlock6.6%
 Age 15 to 17  Unlock3.5%3.9%
 Age 18 to 203.7%  Unlock4.0%
 Age 21 to 24  Unlock4.5%5.2%
 Age 25 to 3413.8%  Unlock13.8%
 Age 35 to 44  Unlock15.9%12.9%
 Age 45 to 5412.7%  Unlock12.6%
 Age 55 to 59  Unlock5.5%6.7%
 Age 60 to 646.9%  Unlock6.3%
 Age 65 to 74  Unlock7.5%9.6%
 Age 75 to 843.2%  Unlock4.5%
 Age 85 and over  Unlock1.8%1.9%
 space1
 Race
 Antioch, CASan Marcos, CAUnited States
 White25.5%  Unlock59.4%
 Black  Unlock1.5%12.2%
 Asian12.2%  Unlock5.6%
 Native American  Unlock0.3%0.6%
 Hawaiian, Pacific Islander1.2%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races6.1%  Unlock3.2%
 Hispanic  Unlock39.7%18.4%
 space2
 Marriage & Family
 Antioch, CASan Marcos, CAUnited States
 Married Population44.7%  Unlock49.8%
     Currently Married  Unlock52.7%48.0%
 Married but Separated1.8%  Unlock1.8%
 Single Population  Unlock45.9%50.2%
 Never Married39.8%  Unlock33.8%
 Divorced  Unlock9.1%10.8%
 Widowed4.9%  Unlock5.6%
 space5
 Household Size  Unlock3.082.60
 Households35,742  Unlock124,010,992
 Family Households  Unlock22,51780,755,759
     Married couple, w/children29.5%  Unlock30.5%
     Married couple, no children  Unlock35.3%42.9%
 Non Family Households9,366  Unlock43,255,233
     Single householder, w/children  Unlock14.4%15.8%
     Single householder, no children14.1%  Unlock10.8%
Voting
Reviews for Antioch    19 Reviews
Jim · Antioch, CA
With over 100,000 people, is Antioch really Crime
Over 10 years ago

Just like most large 100k population cities, there are some places in Antioch that crime is almost non existent while over by the freeway, it's very high. You must look  More

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Sotha · Antioch, CA
Antioch
Over 12 years ago

Crime  More

   |    Reply
Ginny · Antioch, CA
Is Antioch a good place to live?
Over 13 years ago

So you've been searching for an affordable yet spacious home in the Bay Area for years and have started to give up hope. Then one day you expanded your search into East  More

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Reviews for San Marcos    5 Reviews
Kevin · San Marcos, CA
Best place I have ever lived.
Over 7 years ago

Just an amazing place to live. I have lived in 7 states and almost countless cities. Sam Marcos is one of the best. This is literally the longest place I have lived  More

   |    Reply
Norman · Vail, AZ
retiree location ?
Over 15 years ago

Is this area to expensive for the average income retired  More

   |    Reply
Greg · South Pasadena, CA
San Marcos Weather
Over 18 years ago

Beautiful Mediterranean climate with bright sunshine and ocean breazes. City is just 15 minutes away from the  More

   |    Reply

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Learn More About Antioch, California
Overview
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Learn More About San Marcos, California
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