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2025 Compare Cities People:
Groton, CT vs Old Lyme, CT

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Highlights
- Old Lyme is 0% more densely populated than Groton.
- People are 31.8% more likely to be married in Old Lyme.
- The Median Age is 15.6 years older in Old Lyme.
 Groton, CTOld Lyme, CTUnited States
 Population  Unlock7,582329,725,481
 Female Population44.7%  Unlock50.5%
 Male Population55.3%  Unlock49.5%
 Median Age  Unlock49.838.4
 space3
 Population - 201040,094  Unlock309,327,143
 Population - 2000  Unlock7,406285,036,114
 Population - 199045,144  Unlock251,960,433
 Pop. 2000 to Now  Unlock-1.7%15.6%
 Pop. 1990 to Now-15.3%  Unlock30.8%
 space4
 Population Density  Unlock329.493.4
 Land Area31.0  Unlock3,531,905.4
 Water Area  Unlock5.8264,836.8
 space
 Est. Total Population By Age
 Groton, CTOld Lyme, CTUnited States
 Age 0 to 46.0%  Unlock5.9%
 Age 5 to 9  Unlock4.1%6.1%
 Age 10 to 145.6%  Unlock6.6%
 Age 15 to 17  Unlock4.8%3.9%
 Age 18 to 205.6%  Unlock4.0%
 Age 21 to 24  Unlock3.5%5.2%
 Age 25 to 3417.3%  Unlock13.8%
 Age 35 to 44  Unlock9.7%12.9%
 Age 45 to 5410.4%  Unlock12.6%
 Age 55 to 59  Unlock8.6%6.7%
 Age 60 to 645.5%  Unlock6.3%
 Age 65 to 74  Unlock15.4%9.6%
 Age 75 to 844.9%  Unlock4.5%
 Age 85 and over  Unlock2.5%1.9%
 space1
 Race
 Groton, CTOld Lyme, CTUnited States
 White67.0%  Unlock59.4%
 Black  Unlock0.0%12.2%
 Asian7.0%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.1%0.4%
 Two or More Races6.2%  Unlock3.2%
 Hispanic  Unlock5.7%18.4%
 space2
 Marriage & Family
 Groton, CTOld Lyme, CTUnited States
 Married Population46.3%  Unlock49.8%
     Currently Married  Unlock60.7%48.0%
 Married but Separated0.4%  Unlock1.8%
 Single Population  Unlock39.0%50.2%
 Never Married37.2%  Unlock33.8%
 Divorced  Unlock11.0%10.8%
 Widowed5.0%  Unlock5.6%
 space5
 Household Size  Unlock2.442.60
 Households16,043  Unlock124,010,992
 Family Households  Unlock2,20780,755,759
     Married couple, w/children27.4%  Unlock30.5%
     Married couple, no children  Unlock53.2%42.9%
 Non Family Households6,358  Unlock43,255,233
     Single householder, w/children  Unlock8.6%15.8%
     Single householder, no children11.8%  Unlock10.8%
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Learn More About Groton, Connecticut
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Learn More About Old Lyme, Connecticut
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