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2025 Compare Cities People:
Clayton, MO vs Swansea, IL

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Highlights
- Swansea is 0% more densely populated than Clayton.
- People are 39.8% more likely to be married in Swansea.
- The Median Age is 10.5 years older in Swansea.
 Clayton, MOSwansea, ILUnited States
 Population  Unlock15,037329,725,481
 Female Population51.3%  Unlock50.5%
 Male Population48.7%  Unlock49.5%
 Median Age  Unlock39.738.4
 space3
 Population - 201015,974  Unlock309,327,143
 Population - 2000  Unlock10,579285,036,114
 Population - 199013,874  Unlock251,960,433
 Pop. 2000 to Now  Unlock25.5%15.6%
 Pop. 1990 to Now20.9%  Unlock30.8%
 space4
 Population Density  Unlock2,329.593.4
 Land Area2.5  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 Clayton, MOSwansea, ILUnited States
 Age 0 to 43.3%  Unlock5.9%
 Age 5 to 9  Unlock5.9%6.1%
 Age 10 to 146.5%  Unlock6.6%
 Age 15 to 17  Unlock4.0%3.9%
 Age 18 to 2020.3%  Unlock4.0%
 Age 21 to 24  Unlock4.7%5.2%
 Age 25 to 349.9%  Unlock13.8%
 Age 35 to 44  Unlock11.7%12.9%
 Age 45 to 5411.2%  Unlock12.6%
 Age 55 to 59  Unlock7.6%6.7%
 Age 60 to 644.3%  Unlock6.3%
 Age 65 to 74  Unlock9.7%9.6%
 Age 75 to 843.9%  Unlock4.5%
 Age 85 and over  Unlock2.3%1.9%
 space1
 Race
 Clayton, MOSwansea, ILUnited States
 White72.8%  Unlock59.4%
 Black  Unlock21.3%12.2%
 Asian10.7%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.0%0.4%
 Two or More Races4.8%  Unlock3.2%
 Hispanic  Unlock3.0%18.4%
 space2
 Marriage & Family
 Clayton, MOSwansea, ILUnited States
 Married Population40.2%  Unlock49.8%
     Currently Married  Unlock54.7%48.0%
 Married but Separated0.3%  Unlock1.8%
 Single Population  Unlock43.8%50.2%
 Never Married50.7%  Unlock33.8%
 Divorced  Unlock8.6%10.8%
 Widowed3.2%  Unlock5.6%
 space5
 Household Size  Unlock2.612.60
 Households5,566  Unlock124,010,992
 Family Households  Unlock3,66580,755,759
     Married couple, w/children39.2%  Unlock30.5%
     Married couple, no children  Unlock46.7%42.9%
 Non Family Households2,353  Unlock43,255,233
     Single householder, w/children  Unlock12.0%15.8%
     Single householder, no children3.7%  Unlock10.8%
Voting
Reviews for Clayton    3 Reviews
Roger · Saint Louis, MO
weather is great as long as you like humidity
Over 12 years ago

St Louis summers are hot and humid...Fall and spring are not very friendly to people with allergies.. Winter is  More

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Roger · Saint Louis, MO
Weather is great as long as you like humidity
Over 12 years ago

The weather in St Louis can be hot and humid in the summer. Cold in the  More

   |    Reply
Rachel · St. Louis, MO
Low Cost of Living in St. Louis
Over 19 years ago

St. Louis in general has an extremely affordable cost of living. Housing is under the nat'l average, as is gasoline. Food, restaurants and entertainment is all  More

   |    Reply

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Reviews for Swansea    2 Reviews
alan · Belleville, IL
Wolf Branch Schools
Over 15 years ago

Since moving here in 2007, we have been very impressed with the Wolf Branch School  More

   |    Reply
Leslie · Belleville, IL
Love My City
Over 16 years ago

Quite calm city with lots of amenities within short or walking  More

   |    Reply

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Learn More About Clayton, Missouri
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