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2025 Compare Cities People:
Petaluma, CA vs Cambridge, MA

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Highlights
- Cambridge is 0% more densely populated than Petaluma.
- People are 36.6% less likely to be married in Cambridge.
- The Median Age is 12.3 years younger in Cambridge.
 Petaluma, CACambridge, MAUnited States
 Population  Unlock116,892329,725,481
 Female Population50.1%  Unlock50.5%
 Male Population49.9%  Unlock49.5%
 Median Age  Unlock30.538.4
 space3
 Population - 201058,048  Unlock309,327,143
 Population - 2000  Unlock101,355285,036,114
 Population - 199043,184  Unlock251,960,433
 Pop. 2000 to Now  Unlock17.6%15.6%
 Pop. 1990 to Now40.4%  Unlock30.8%
 space4
 Population Density  Unlock18,284.493.4
 Land Area14.4  Unlock3,531,905.4
 Water Area  Unlock0.7264,836.8
 space
 Est. Total Population By Age
 Petaluma, CACambridge, MAUnited States
 Age 0 to 45.0%  Unlock5.9%
 Age 5 to 9  Unlock3.5%6.1%
 Age 10 to 146.1%  Unlock6.6%
 Age 15 to 17  Unlock1.9%3.9%
 Age 18 to 203.1%  Unlock4.0%
 Age 21 to 24  Unlock10.9%5.2%
 Age 25 to 3412.7%  Unlock13.8%
 Age 35 to 44  Unlock13.3%12.9%
 Age 45 to 5413.5%  Unlock12.6%
 Age 55 to 59  Unlock3.6%6.7%
 Age 60 to 647.3%  Unlock6.3%
 Age 65 to 74  Unlock6.8%9.6%
 Age 75 to 845.0%  Unlock4.5%
 Age 85 and over  Unlock1.5%1.9%
 space1
 Race
 Petaluma, CACambridge, MAUnited States
 White68.1%  Unlock59.4%
 Black  Unlock10.0%12.2%
 Asian4.1%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.8%0.4%
 Two or More Races4.4%  Unlock3.2%
 Hispanic  Unlock8.8%18.4%
 space2
 Marriage & Family
 Petaluma, CACambridge, MAUnited States
 Married Population53.4%  Unlock49.8%
     Currently Married  Unlock33.1%48.0%
 Married but Separated1.5%  Unlock1.8%
 Single Population  Unlock66.1%50.2%
 Never Married30.0%  Unlock33.8%
 Divorced  Unlock5.6%10.8%
 Widowed5.0%  Unlock5.6%
 space5
 Household Size  Unlock2.092.60
 Households22,756  Unlock124,010,992
 Family Households  Unlock19,58480,755,759
     Married couple, w/children34.8%  Unlock30.5%
     Married couple, no children  Unlock47.0%42.9%
 Non Family Households7,697  Unlock43,255,233
     Single householder, w/children  Unlock10.6%15.8%
     Single householder, no children8.1%  Unlock10.8%
Voting
Reviews for Petaluma    16 Reviews
Chris · Petaluma, CA
Old hippies are in charge
Over 4 years ago

I agree with the low star reviews. Been here for 25 years, raised a family and seen everything turn to the left and worse. Weather is glorious, love the old Victorians  More

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O · Petaluma, CA
A great place to call home, if you can afford it
Over 4 years ago

We’ve lived here for 3 years and we love it. It has taken some time to grow on us. We moved from SF where we had lived over 15 years, we were not used to one year leases  More

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Ima · Petaluma, CA
California living at its finest!
Over 4 years ago

I’ve lived here a couple of years (after living in others parts of the Bay Area for 15+ years) and I love it! Great neighborhoods, friendly folks, good schools with  More

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Reviews for Cambridge    14 Reviews
David · Cambridge, MA
Lots of changes
Over 10 years ago

Cambridge is a great place to live. It is rather expensive, but has great access to Boston, schools and hospitals. There is a lot of construction underway that can be  More

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Herman  · Cambridge, MA
Tap water quality ranking in USA
Over 13 years ago

Need info on test results on tap or drinking water quality, 02139 Green St area.  More

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Jean · Marlborough, MA
Cambridge is Education Hub
Over 13 years ago

Home to both Harvard and MIT, Cambridge is the cornerstone of higher education. Residents are very intelligent and open to new ideas.   More

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Learn More About Petaluma, California
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