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2026 Compare Cities People:
Fleming Island, FL vs Callahan, FL

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Highlights
- Callahan is 0% more densely populated than Fleming Island.
- People are 32.2% less likely to be married in Callahan.
- The Median Age is 8.0 years younger in Callahan.
 Fleming Island, FLCallahan, FLUnited States
 Population  Unlock1,637329,725,481
 Female Population51.5%  Unlock50.5%
 Male Population48.5%  Unlock49.5%
 Median Age  Unlock38.138.4
 space3
 Population - 201027,908  Unlock309,327,143
 Population - 2000  Unlock962285,036,114
 Population - 19905,528  Unlock251,960,433
 Pop. 2000 to Now  Unlock44.3%15.6%
 Pop. 1990 to Now477.6%  Unlock30.8%
 space4
 Population Density  Unlock1,170.193.4
 Land Area15.8  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Fleming Island, FLCallahan, FLUnited States
 Age 0 to 43.7%  Unlock5.9%
 Age 5 to 9  Unlock4.5%6.1%
 Age 10 to 145.6%  Unlock6.6%
 Age 15 to 17  Unlock4.5%3.9%
 Age 18 to 204.7%  Unlock4.0%
 Age 21 to 24  Unlock3.6%5.2%
 Age 25 to 348.1%  Unlock13.8%
 Age 35 to 44  Unlock12.4%12.9%
 Age 45 to 5415.9%  Unlock12.6%
 Age 55 to 59  Unlock4.5%6.7%
 Age 60 to 647.6%  Unlock6.3%
 Age 65 to 74  Unlock14.8%9.6%
 Age 75 to 845.8%  Unlock4.5%
 Age 85 and over  Unlock1.6%1.9%
 space1
 Race
 Fleming Island, FLCallahan, FLUnited States
 White78.7%  Unlock59.4%
 Black  Unlock16.9%12.2%
 Asian2.4%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.0%0.4%
 Two or More Races3.4%  Unlock3.2%
 Hispanic  Unlock2.7%18.4%
 space2
 Marriage & Family
 Fleming Island, FLCallahan, FLUnited States
 Married Population66.7%  Unlock49.8%
     Currently Married  Unlock41.7%48.0%
 Married but Separated0.4%  Unlock1.8%
 Single Population  Unlock54.8%50.2%
 Never Married20.9%  Unlock33.8%
 Divorced  Unlock13.8%10.8%
 Widowed4.2%  Unlock5.6%
 space5
 Household Size  Unlock2.602.60
 Households11,090  Unlock124,010,992
 Family Households  Unlock44880,755,759
     Married couple, w/children33.0%  Unlock30.5%
     Married couple, no children  Unlock31.9%42.9%
 Non Family Households2,133  Unlock43,255,233
     Single householder, w/children  Unlock21.4%15.8%
     Single householder, no children5.0%  Unlock10.8%
Voting
Reviews for Fleming Island    2 Reviews
Yvonne · Fleming Island, FL
Beautiful Fleming Island Florida
Over 4 years ago

Out of all the places I have lived this is by far my favorite! Very peaceful,well kept ,clean place to call  More

   |    Reply
Mara · Fleming Island, FL
Great schools and safe neighborhoods
Over 4 years ago

Fleming island is very quiet, neighborhood friendly, great schools and very safe for  More

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Reviews for Callahan    2 Reviews
Peyton · Fernandina Beach, FL
Bad Hill Billy Place
Over 5 years ago

I hate Callahan because of the  More

   |    Reply
fox · Ogden, UT
PROS and CONS of Nassau County
Over 14 years ago

Can someone elaborate the pros and cons of moving to Nassau county where I can buy 2+acres of land for under 20K? We are a military family and this will be our final  More

   |    Reply

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Learn More About Fleming Island, Florida
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