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2025 Compare Cities People:
Keystone Heights, FL vs St. Marys, GA

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Highlights
- St. Marys is 0% more densely populated than Keystone Heights.
- People are 30.7% more likely to be married in St. Marys.
- The Median Age is 0.7 years older in St. Marys.
 Keystone Heights, FLSt. Marys, GAUnited States
 Population  Unlock18,200329,725,481
 Female Population55.1%  Unlock50.5%
 Male Population44.9%  Unlock49.5%
 Median Age  Unlock3538.4
 space3
 Population - 20101,356  Unlock309,327,143
 Population - 2000  Unlock13,761285,036,114
 Population - 19901,315  Unlock251,960,433
 Pop. 2000 to Now  Unlock37.0%15.6%
 Pop. 1990 to Now17.8%  Unlock30.8%
 space4
 Population Density  Unlock797.593.4
 Land Area1.1  Unlock3,531,905.4
 Water Area  Unlock2.2264,836.8
 space
 Est. Total Population By Age
 Keystone Heights, FLSt. Marys, GAUnited States
 Age 0 to 46.0%  Unlock5.9%
 Age 5 to 9  Unlock5.8%6.1%
 Age 10 to 149.1%  Unlock6.6%
 Age 15 to 17  Unlock5.0%3.9%
 Age 18 to 202.7%  Unlock4.0%
 Age 21 to 24  Unlock5.0%5.2%
 Age 25 to 3418.3%  Unlock13.8%
 Age 35 to 44  Unlock12.4%12.9%
 Age 45 to 5410.4%  Unlock12.6%
 Age 55 to 59  Unlock5.7%6.7%
 Age 60 to 645.4%  Unlock6.3%
 Age 65 to 74  Unlock9.5%9.6%
 Age 75 to 844.1%  Unlock4.5%
 Age 85 and over  Unlock0.7%1.9%
 space1
 Race
 Keystone Heights, FLSt. Marys, GAUnited States
 White80.2%  Unlock59.4%
 Black  Unlock13.1%12.2%
 Asian2.7%  Unlock5.6%
 Native American  Unlock0.7%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races3.1%  Unlock3.2%
 Hispanic  Unlock6.7%18.4%
 space2
 Marriage & Family
 Keystone Heights, FLSt. Marys, GAUnited States
 Married Population41.9%  Unlock49.8%
     Currently Married  Unlock50.9%48.0%
 Married but Separated1.5%  Unlock1.8%
 Single Population  Unlock45.3%50.2%
 Never Married30.9%  Unlock33.8%
 Divorced  Unlock12.8%10.8%
 Widowed6.5%  Unlock5.6%
 space5
 Household Size  Unlock2.582.60
 Households550  Unlock124,010,992
 Family Households  Unlock4,89080,755,759
     Married couple, w/children24.1%  Unlock30.5%
     Married couple, no children  Unlock39.7%42.9%
 Non Family Households185  Unlock43,255,233
     Single householder, w/children  Unlock20.7%15.8%
     Single householder, no children9.6%  Unlock10.8%
Voting
Reviews for Keystone Heights    5 Reviews
Joanne · Brandon, VT
Can’t win ‘em all!
Over 5 years ago

I live in Vermont where winters are very long. I thought it could be nice to find a rural area in FL to get away to a couple times a year. I bought the property  More

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Dee · Keystone Heights, FL
col
Over 14 years ago

good  More

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michelle · Keystone Heights, FL
My thoughts
Over 16 years ago

I have lived in Keystone Heights since 1997. I live on 10 very quiet and private acres. I love that and I happy with my home. However, if I could go back to 1997 I would  More

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Reviews for St. Marys    12 Reviews
Dustin · St. Marys, GA
Its decent for what it is...
Over 3 years ago

I'm not the type to sugarcoat reviews, I call it as I see it. So here goes. I will admit that St. Marys embraces that small town mentality. They do have regular  More

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Matthew · St. Marys, GA
It is not a big city, don't pretend it is.
Over 6 years ago

You have to know what you want. Don't expect St Marys to be something it's not. If you want traffic and congestion, don't move here. It was a small town that  More

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John · St. Marys, GA
An Ideal Place for Families and Retirees Alike
Over 6 years ago

This sweet little town is just what my family was looking for — a quiet place adjacent to the marshes, river and seashore. It’s affordable and safe, without the traffic  More

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Learn More About Keystone Heights, Florida
Overview
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Learn More About St. Marys, Georgia
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