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2025 Compare Cities People:
Fairfield, CA vs Ontario, CA

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Highlights
- Ontario is 0% more densely populated than Fairfield.
- People are 8.7% less likely to be married in Ontario.
- The Median Age is 2.6 years younger in Ontario.
 Fairfield, CAOntario, CAUnited States
 Population  Unlock175,223329,725,481
 Female Population50.1%  Unlock50.5%
 Male Population49.9%  Unlock49.5%
 Median Age  Unlock32.638.4
 space3
 Population - 2010105,652  Unlock309,327,143
 Population - 2000  Unlock158,007285,036,114
 Population - 199077,211  Unlock251,960,433
 Pop. 2000 to Now  Unlock16.1%15.6%
 Pop. 1990 to Now52.3%  Unlock30.8%
 space4
 Population Density  Unlock3,507.193.4
 Land Area41.0  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Fairfield, CAOntario, CAUnited States
 Age 0 to 47.4%  Unlock5.9%
 Age 5 to 9  Unlock7.0%6.1%
 Age 10 to 147.6%  Unlock6.6%
 Age 15 to 17  Unlock4.4%3.9%
 Age 18 to 203.6%  Unlock4.0%
 Age 21 to 24  Unlock6.4%5.2%
 Age 25 to 3415.5%  Unlock13.8%
 Age 35 to 44  Unlock13.6%12.9%
 Age 45 to 5412.3%  Unlock12.6%
 Age 55 to 59  Unlock5.7%6.7%
 Age 60 to 645.5%  Unlock6.3%
 Age 65 to 74  Unlock6.4%9.6%
 Age 75 to 843.7%  Unlock4.5%
 Age 85 and over  Unlock0.9%1.9%
 space1
 Race
 Fairfield, CAOntario, CAUnited States
 White29.0%  Unlock59.4%
 Black  Unlock5.2%12.2%
 Asian17.4%  Unlock5.6%
 Native American  Unlock0.3%0.6%
 Hawaiian, Pacific Islander1.2%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races6.7%  Unlock3.2%
 Hispanic  Unlock69.9%18.4%
 space2
 Marriage & Family
 Fairfield, CAOntario, CAUnited States
 Married Population51.5%  Unlock49.8%
     Currently Married  Unlock44.2%48.0%
 Married but Separated2.3%  Unlock1.8%
 Single Population  Unlock53.0%50.2%
 Never Married35.1%  Unlock33.8%
 Divorced  Unlock8.3%10.8%
 Widowed4.9%  Unlock5.6%
 space5
 Household Size  Unlock3.422.60
 Households37,176  Unlock124,010,992
 Family Households  Unlock40,03180,755,759
     Married couple, w/children34.1%  Unlock30.5%
     Married couple, no children  Unlock30.9%42.9%
 Non Family Households9,139  Unlock43,255,233
     Single householder, w/children  Unlock20.2%15.8%
     Single householder, no children11.0%  Unlock10.8%
Voting
Reviews for Fairfield    10 Reviews
Debra · Fairfield, CA
Fairfield is Dead
Over 5 years ago

I've lived here for 4 years. On the up side, housing is affordable. The downside, there is nothing to do here. The city lacks community events and an a nice downtown. We  More

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Melanie · Fairfield, CA
Housing Too Expensive
Over 10 years ago

I am finding out the cost of living here in Fairfield is way too high for my retirement. I am looking for a place where the cost of living is in line with my retirement  More

   |    Reply
mario · Fairfield, CA
good
Over 14 years ago

good  More

   |    Reply

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Reviews for Ontario    6 Reviews
Robert · Rancho Cucamonga, CA
Best Reformed Church available
Over 13 years ago

We've lived in this area for several years. Traveling long distances to other cities for churches. Passing a quiet, unassuming church along the way for years. Until  More

   |    Reply
sachamo · Pomona, CA
Home is where the heart is
Over 14 years ago

cool  More

   |    Reply
yvonne · Ontario, CA
Entertainment and shopping
Over 14 years ago

I think Ontario,ca us awesome because we have an entertainment Venue and large shopping mall to please everyone of all  More

   |    Reply

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Learn More About Fairfield, California
Overview
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Learn More About Ontario, California
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