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2025 Compare Cities People:
Plainfield, IL vs Ontario, CA

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Highlights
- Ontario is 0% more densely populated than Plainfield.
- People are 25.2% less likely to be married in Ontario.
- The Median Age is 4.7 years younger in Ontario.
 Plainfield, ILOntario, CAUnited States
 Population  Unlock175,223329,725,481
 Female Population50.7%  Unlock50.5%
 Male Population49.4%  Unlock49.5%
 Median Age  Unlock32.638.4
 space3
 Population - 201039,990  Unlock309,327,143
 Population - 2000  Unlock158,007285,036,114
 Population - 19904,557  Unlock251,960,433
 Pop. 2000 to Now  Unlock16.1%15.6%
 Pop. 1990 to Now877.4%  Unlock30.8%
 space4
 Population Density  Unlock3,507.193.4
 Land Area24.5  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Plainfield, ILOntario, CAUnited States
 Age 0 to 45.7%  Unlock5.9%
 Age 5 to 9  Unlock7.0%6.1%
 Age 10 to 1410.5%  Unlock6.6%
 Age 15 to 17  Unlock4.4%3.9%
 Age 18 to 203.8%  Unlock4.0%
 Age 21 to 24  Unlock6.4%5.2%
 Age 25 to 348.7%  Unlock13.8%
 Age 35 to 44  Unlock13.6%12.9%
 Age 45 to 5417.9%  Unlock12.6%
 Age 55 to 59  Unlock5.7%6.7%
 Age 60 to 644.3%  Unlock6.3%
 Age 65 to 74  Unlock6.4%9.6%
 Age 75 to 842.4%  Unlock4.5%
 Age 85 and over  Unlock0.9%1.9%
 space1
 Race
 Plainfield, ILOntario, CAUnited States
 White68.6%  Unlock59.4%
 Black  Unlock5.2%12.2%
 Asian9.4%  Unlock5.6%
 Native American  Unlock0.3%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races3.3%  Unlock3.2%
 Hispanic  Unlock69.9%18.4%
 space2
 Marriage & Family
 Plainfield, ILOntario, CAUnited States
 Married Population62.9%  Unlock49.8%
     Currently Married  Unlock44.2%48.0%
 Married but Separated0.8%  Unlock1.8%
 Single Population  Unlock53.0%50.2%
 Never Married27.5%  Unlock33.8%
 Divorced  Unlock8.3%10.8%
 Widowed3.2%  Unlock5.6%
 space5
 Household Size  Unlock3.422.60
 Households13,510  Unlock124,010,992
 Family Households  Unlock40,03180,755,759
     Married couple, w/children50.1%  Unlock30.5%
     Married couple, no children  Unlock30.9%42.9%
 Non Family Households1,985  Unlock43,255,233
     Single householder, w/children  Unlock20.2%15.8%
     Single householder, no children6.0%  Unlock10.8%
Voting
Reviews for Plainfield    13 Reviews
Peter · Plainfield, IL
Housing
Over 11 years ago

Plenty of housing in Plainfield, Joliet, IL area but norm on rent for a three bedroom house is around $2000.00  More

   |    Reply
Bp · Plainfield, IL
Grand Park Subdivision
Over 12 years ago

We transferred from the East Coast to Chicagoland and did not know where to live....We have kids and did NOT want the excess (read Drug Problems) in Naperville....Our  More

   |    Reply
Eric · Plainfield, IL
Plainfleld, IL
Over 12 years ago

Plainfield is a good place to live, housing is descent, low crime.   More

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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 Plainfield, Illinois
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