2025 Compare Cities People:
Ottawa, IL vs St. Peters, MO

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Highlights
- St. Peters is 0% more densely populated than Ottawa.
- People are 18.2% more likely to be married in St. Peters.
- The Median Age is 0.3 years older in St. Peters.
 Ottawa, ILSt. Peters, MOUnited States
 Population  Unlock57,289329,725,481
 Female Population52.8%  Unlock50.5%
 Male Population47.2%  Unlock49.5%
 Median Age  Unlock4038.4
 space3
 Population - 201018,912  Unlock309,327,143
 Population - 2000  Unlock51,381285,036,114
 Population - 199017,451  Unlock251,960,433
 Pop. 2000 to Now  Unlock13.0%15.6%
 Pop. 1990 to Now3.7%  Unlock30.8%
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 Population Density  Unlock2,548.293.4
 Land Area12.8  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Ottawa, ILSt. Peters, MOUnited States
 Age 0 to 46.1%  Unlock5.9%
 Age 5 to 9  Unlock6.1%6.1%
 Age 10 to 146.5%  Unlock6.6%
 Age 15 to 17  Unlock3.2%3.9%
 Age 18 to 203.1%  Unlock4.0%
 Age 21 to 24  Unlock3.9%5.2%
 Age 25 to 3412.7%  Unlock13.8%
 Age 35 to 44  Unlock14.4%12.9%
 Age 45 to 5411.6%  Unlock12.6%
 Age 55 to 59  Unlock7.9%6.7%
 Age 60 to 647.6%  Unlock6.3%
 Age 65 to 74  Unlock10.4%9.6%
 Age 75 to 844.9%  Unlock4.5%
 Age 85 and over  Unlock2.3%1.9%
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 Race
 Ottawa, ILSt. Peters, MOUnited States
 White83.2%  Unlock59.4%
 Black  Unlock5.8%12.2%
 Asian0.9%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.0%0.4%
 Two or More Races2.5%  Unlock3.2%
 Hispanic  Unlock2.3%18.4%
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 Marriage & Family
 Ottawa, ILSt. Peters, MOUnited States
 Married Population48.3%  Unlock49.8%
     Currently Married  Unlock55.7%48.0%
 Married but Separated2.7%  Unlock1.8%
 Single Population  Unlock43.0%50.2%
 Never Married31.0%  Unlock33.8%
 Divorced  Unlock11.5%10.8%
 Widowed7.0%  Unlock5.6%
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 Household Size  Unlock2.482.60
 Households7,672  Unlock124,010,992
 Family Households  Unlock15,10080,755,759
     Married couple, w/children29.0%  Unlock30.5%
     Married couple, no children  Unlock46.8%42.9%
 Non Family Households3,061  Unlock43,255,233
     Single householder, w/children  Unlock10.9%15.8%
     Single householder, no children10.9%  Unlock10.8%
Reviews for Ottawa    6 Reviews

Over 8 years ago

Have all of the radiation sites been cleaned up? If not, did the tornado stir up and blast some radiation from these sites to other  More

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Over 11 years ago

Good location with low cost of living and close enough to Chicago and suburbs to take advantage of their  More

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Over 15 years ago

Although Ottawa is a very nice place to live, living here is becoming rediculous...as taxes go. I bought a house less then four years ago and my taxed went from  More

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Reviews for St. Peters    2 Reviews

My husband just took a job out here in St. Louis about four months ago. We are from Loveland Ohio (a small town 25 miles out of Cincinnati). When I knew it was a  More

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Recently, I read that Forbes called St. Peters, MO one of the best places to retire in the country. It must be noted, though, that this town came about 300th on the  More

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