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2025 Compare Cities People:
Sanibel, FL vs Marco Island, FL

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Highlights
- Marco Island is 0% more densely populated than Sanibel.
- People are 2.3% less likely to be married in Marco Island.
- The Median Age is 1.3 years younger in Marco Island.
 Sanibel, FLMarco Island, FLUnited States
 Population  Unlock15,929329,725,481
 Female Population52.1%  Unlock50.5%
 Male Population47.9%  Unlock49.5%
 Median Age  Unlock66.938.4
 space3
 Population - 20106,486  Unlock309,327,143
 Population - 2000  Unlock15,068285,036,114
 Population - 19905,468  Unlock251,960,433
 Pop. 2000 to Now  Unlock20.1%15.6%
 Pop. 1990 to Now35.9%  Unlock30.8%
 space4
 Population Density  Unlock1,310.293.4
 Land Area16.2  Unlock3,531,905.4
 Water Area  Unlock12.5264,836.8
 space
 Est. Total Population By Age
 Sanibel, FLMarco Island, FLUnited States
 Age 0 to 40.4%  Unlock5.9%
 Age 5 to 9  Unlock2.1%6.1%
 Age 10 to 140.9%  Unlock6.6%
 Age 15 to 17  Unlock1.5%3.9%
 Age 18 to 200.5%  Unlock4.0%
 Age 21 to 24  Unlock2.0%5.2%
 Age 25 to 343.3%  Unlock13.8%
 Age 35 to 44  Unlock4.2%12.9%
 Age 45 to 545.8%  Unlock12.6%
 Age 55 to 59  Unlock7.4%6.7%
 Age 60 to 6412.7%  Unlock6.3%
 Age 65 to 74  Unlock25.6%9.6%
 Age 75 to 8419.4%  Unlock4.5%
 Age 85 and over  Unlock7.8%1.9%
 space1
 Race
 Sanibel, FLMarco Island, FLUnited States
 White96.9%  Unlock59.4%
 Black  Unlock0.4%12.2%
 Asian0.8%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.0%0.4%
 Two or More Races0.6%  Unlock3.2%
 Hispanic  Unlock8.3%18.4%
 space2
 Marriage & Family
 Sanibel, FLMarco Island, FLUnited States
 Married Population77.2%  Unlock49.8%
     Currently Married  Unlock74.7%48.0%
 Married but Separated0.5%  Unlock1.8%
 Single Population  Unlock24.5%50.2%
 Never Married7.8%  Unlock33.8%
 Divorced  Unlock6.7%10.8%
 Widowed8.0%  Unlock5.6%
 space5
 Household Size  Unlock1.962.60
 Households3,471  Unlock124,010,992
 Family Households  Unlock5,73680,755,759
     Married couple, w/children2.0%  Unlock30.5%
     Married couple, no children  Unlock86.1%42.9%
 Non Family Households1,065  Unlock43,255,233
     Single householder, w/children  Unlock1.5%15.8%
     Single householder, no children2.8%  Unlock10.8%
Voting
Reviews for Sanibel    1 Reviews
Dick283 · Sanibel, FL
Great Place to Retire
Over 12 years ago

Sun, Shells, and environmentally  More

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Reviews for Marco Island    3 Reviews
Lani · San Diego, CA
Absolute Paradise (island life)
Over 4 years ago

We just purchased a home here from San Diego, Ca. Marco island is so refreshing! It is Clean, no trash, people care about their yards and community with impeccable  More

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Kathryn · Marco Island, FL
Great Place to Retire To
Over 8 years ago

We moved here upon retirement and have been delighted with our new community. With canals crisscrossing the entire island, most homesites are on the water, and we enjoy  More

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Ernie  · Homestead, FL
Outsiders not welcomed at Marco Island
Over 9 years ago

I have been coming to Marco Island for the past couple of years to spend the 4th of July with my family in this beautiful city, but never again. From what we learned  More

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Learn More About Sanibel, Florida
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