2025 Compare Cities People:
Mason City, IA vs Decatur, IL

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Highlights
- Decatur is 0% more densely populated than Mason City.
- People are 18.1% less likely to be married in Decatur.
- The Median Age is 2.6 years younger in Decatur.
 Mason City, IADecatur, ILUnited States
 Population  Unlock71,309329,725,481
 Female Population51.2%  Unlock50.5%
 Male Population48.8%  Unlock49.5%
 Median Age  Unlock39.938.4
 space3
 Population - 201028,042  Unlock309,327,143
 Population - 2000  Unlock81,860285,036,114
 Population - 199029,040  Unlock251,960,433
 Pop. 2000 to Now  Unlock-14.5%15.6%
 Pop. 1990 to Now-8.1%  Unlock30.8%
 space4
 Population Density  Unlock1,685.093.4
 Land Area27.8  Unlock3,531,905.4
 Water Area  Unlock4.7264,836.8
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 Est. Total Population By Age
 Mason City, IADecatur, ILUnited States
 Age 0 to 45.3%  Unlock5.9%
 Age 5 to 9  Unlock5.5%6.1%
 Age 10 to 147.1%  Unlock6.6%
 Age 15 to 17  Unlock3.7%3.9%
 Age 18 to 203.8%  Unlock4.0%
 Age 21 to 24  Unlock5.2%5.2%
 Age 25 to 3412.8%  Unlock13.8%
 Age 35 to 44  Unlock11.3%12.9%
 Age 45 to 5411.8%  Unlock12.6%
 Age 55 to 59  Unlock7.0%6.7%
 Age 60 to 648.2%  Unlock6.3%
 Age 65 to 74  Unlock11.1%9.6%
 Age 75 to 845.9%  Unlock4.5%
 Age 85 and over  Unlock3.3%1.9%
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 Race
 Mason City, IADecatur, ILUnited States
 White87.5%  Unlock59.4%
 Black  Unlock23.0%12.2%
 Asian0.8%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.3%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races2.2%  Unlock3.2%
 Hispanic  Unlock2.8%18.4%
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 Marriage & Family
 Mason City, IADecatur, ILUnited States
 Married Population51.9%  Unlock49.8%
     Currently Married  Unlock41.1%48.0%
 Married but Separated1.2%  Unlock1.8%
 Single Population  Unlock57.5%50.2%
 Never Married29.1%  Unlock33.8%
 Divorced  Unlock14.0%10.8%
 Widowed7.0%  Unlock5.6%
 space5
 Household Size  Unlock2.212.60
 Households12,744  Unlock124,010,992
 Family Households  Unlock16,33580,755,759
     Married couple, w/children23.6%  Unlock30.5%
     Married couple, no children  Unlock48.1%42.9%
 Non Family Households5,480  Unlock43,255,233
     Single householder, w/children  Unlock20.0%15.8%
     Single householder, no children8.4%  Unlock10.8%
Reviews for Mason City    8 Reviews

I am from the area originally and have lived several places. I recently moved back from Arizona. I moved back to help with my elderly parents. If I did not have  More

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Over 13 years ago

Where to begin?? Murder,arson,abductions,beastialty,gang killings,meth labs,pantie thiefs. High utility bills, no jobs, corrupt police, evil judges, minus 40 below wind  More

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Over 14 years ago

Unless you have a tie to Mason City, such as family, don't even consider this desolate town. The population is declining rapidly for a reason. You are on an island,  More

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Reviews for Decatur    14 Reviews

I was sent here by the company I worked for in the '90's and was not initially impressed with midwest living. However, over the years I got used to living in the "Pride  More

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I grew up in Decatur and I still have family there, but it depresses me to see what it has become. It has a high unemployment rate, many business have closed or are run  More

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Over 14 years ago

If you enjoy drinking & driving, Decatur's fifteen drive-thru liquor windows, three times the # of drive-thru's than the ten largest cities in Illinois, COMBINED, will  More

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