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2025 Compare Cities People:
Zachary, LA vs Decatur, IL

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Highlights
- Decatur is 0% more densely populated than Zachary.
- People are 27.3% less likely to be married in Decatur.
- The Median Age is 5.9 years older in Decatur.
 Zachary, LADecatur, ILUnited States
 Population  Unlock71,309329,725,481
 Female Population50.2%  Unlock50.5%
 Male Population49.8%  Unlock49.5%
 Median Age  Unlock39.938.4
 space3
 Population - 201015,201  Unlock309,327,143
 Population - 2000  Unlock81,860285,036,114
 Population - 19909,036  Unlock251,960,433
 Pop. 2000 to Now  Unlock-14.5%15.6%
 Pop. 1990 to Now103.8%  Unlock30.8%
 space4
 Population Density  Unlock1,685.093.4
 Land Area26.1  Unlock3,531,905.4
 Water Area  Unlock4.7264,836.8
 space
 Est. Total Population By Age
 Zachary, LADecatur, ILUnited States
 Age 0 to 45.0%  Unlock5.9%
 Age 5 to 9  Unlock5.5%6.1%
 Age 10 to 1410.3%  Unlock6.6%
 Age 15 to 17  Unlock3.7%3.9%
 Age 18 to 202.6%  Unlock4.0%
 Age 21 to 24  Unlock5.2%5.2%
 Age 25 to 3414.0%  Unlock13.8%
 Age 35 to 44  Unlock11.3%12.9%
 Age 45 to 5412.0%  Unlock12.6%
 Age 55 to 59  Unlock7.0%6.7%
 Age 60 to 644.6%  Unlock6.3%
 Age 65 to 74  Unlock11.1%9.6%
 Age 75 to 841.9%  Unlock4.5%
 Age 85 and over  Unlock3.3%1.9%
 space1
 Race
 Zachary, LADecatur, ILUnited States
 White45.0%  Unlock59.4%
 Black  Unlock23.0%12.2%
 Asian2.6%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races1.2%  Unlock3.2%
 Hispanic  Unlock2.8%18.4%
 space2
 Marriage & Family
 Zachary, LADecatur, ILUnited States
 Married Population58.4%  Unlock49.8%
     Currently Married  Unlock41.1%48.0%
 Married but Separated1.9%  Unlock1.8%
 Single Population  Unlock57.5%50.2%
 Never Married27.3%  Unlock33.8%
 Divorced  Unlock14.0%10.8%
 Widowed4.1%  Unlock5.6%
 space5
 Household Size  Unlock2.212.60
 Households6,387  Unlock124,010,992
 Family Households  Unlock16,33580,755,759
     Married couple, w/children41.7%  Unlock30.5%
     Married couple, no children  Unlock48.1%42.9%
 Non Family Households1,488  Unlock43,255,233
     Single householder, w/children  Unlock20.0%15.8%
     Single householder, no children8.1%  Unlock10.8%
Voting
Reviews for Zachary    2 Reviews
blake  · Zachary, LA
Zachary, LA
Over 16 years ago

The best schools system in the State of Louisiana; four years in a  More

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stacy · Zachary, LA
school districts
Over 17 years ago

The Zachary School District is rated number one in the  More

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Reviews for Decatur    14 Reviews
Ray · Decatur, IL
Hot in the summer; cold, windy, and cloudy in the
Over 12 years ago

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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Bp · Tucson, AZ
Has Changed not for the Better!!!
Over 13 years ago

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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David  · Decatur, IL
Drive-thru liquor windows
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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Learn More About Zachary, Louisiana
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