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COS COB VS.
BROOKLINE
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2025 Compare Cities People:
Cos Cob, CT vs Brookline, MA
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Highlights
- Brookline is 0% more densely populated than Cos Cob.
- People are 19.4% less likely to be married in Brookline.
- The Median Age is 5.8 years younger in Brookline.
Cos Cob, CT
Brookline, MA
United States
Population
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62,620
329,725,481
Female Population
51.1%
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50.5%
Male Population
48.9%
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49.5%
Median Age
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35.3
38.4
space3
Population - 2010
6,126
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309,327,143
Population - 2000
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57,107
285,036,114
Population - 1990
6,511
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251,960,433
Pop. 2000 to Now
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3.4%
15.6%
Pop. 1990 to Now
4.7%
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30.8%
space4
Population Density
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9,277.0
93.4
Land Area
2.1
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3,531,905.4
Water Area
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0.1
264,836.8
space
Est. Total Population By Age
Cos Cob, CT
Brookline, MA
United States
Age 0 to 4
7.0%
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5.9%
Age 5 to 9
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5.0%
6.1%
Age 10 to 14
6.5%
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6.6%
Age 15 to 17
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3.1%
3.9%
Age 18 to 20
2.5%
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4.0%
Age 21 to 24
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9.4%
5.2%
Age 25 to 34
8.8%
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13.8%
Age 35 to 44
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13.1%
12.9%
Age 45 to 54
15.3%
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12.6%
Age 55 to 59
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4.8%
6.7%
Age 60 to 64
6.0%
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6.3%
Age 65 to 74
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9.1%
9.6%
Age 75 to 84
3.2%
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4.5%
Age 85 and over
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1.9%
1.9%
space1
Race
Cos Cob, CT
Brookline, MA
United States
White
74.9%
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59.4%
Black
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2.2%
12.2%
Asian
5.4%
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5.6%
Native American
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0.1%
0.6%
Hawaiian, Pacific Islander
0.0%
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0.2%
Other
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0.2%
0.4%
Two or More Races
7.2%
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3.2%
Hispanic
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6.6%
18.4%
space2
Marriage & Family
Cos Cob, CT
Brookline, MA
United States
Married Population
58.5%
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49.8%
Currently Married
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46.5%
48.0%
Married but Separated
0.7%
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1.8%
Single Population
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52.8%
50.2%
Never Married
28.8%
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33.8%
Divorced
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6.1%
10.8%
Widowed
3.4%
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5.6%
space5
Household Size
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2.28
2.60
Households
2,572
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124,010,992
Family Households
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13,615
80,755,759
Married couple, w/children
44.3%
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30.5%
Married couple, no children
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42.4%
42.9%
Non Family Households
670
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43,255,233
Single householder, w/children
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8.0%
15.8%
Single householder, no children
3.6%
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10.8%
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Learn More About Cos Cob, Connecticut
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