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

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Highlights
- Somerville is 0% more densely populated than Petaluma.
- People are 37.4% less likely to be married in Somerville.
- The Median Age is 11.0 years younger in Somerville.
 Petaluma, CASomerville, MAUnited States
 Population  Unlock80,608329,725,481
 Female Population50.1%  Unlock50.5%
 Male Population49.9%  Unlock49.5%
 Median Age  Unlock31.838.4
 space3
 Population - 201058,048  Unlock309,327,143
 Population - 2000  Unlock77,478285,036,114
 Population - 199043,184  Unlock251,960,433
 Pop. 2000 to Now  Unlock4.5%15.6%
 Pop. 1990 to Now40.4%  Unlock30.8%
 space4
 Population Density  Unlock19,546.193.4
 Land Area14.4  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 Petaluma, CASomerville, MAUnited States
 Age 0 to 45.0%  Unlock5.9%
 Age 5 to 9  Unlock3.0%6.1%
 Age 10 to 146.1%  Unlock6.6%
 Age 15 to 17  Unlock1.3%3.9%
 Age 18 to 203.1%  Unlock4.0%
 Age 21 to 24  Unlock9.6%5.2%
 Age 25 to 3412.7%  Unlock13.8%
 Age 35 to 44  Unlock14.5%12.9%
 Age 45 to 5413.5%  Unlock12.6%
 Age 55 to 59  Unlock4.6%6.7%
 Age 60 to 647.3%  Unlock6.3%
 Age 65 to 74  Unlock5.5%9.6%
 Age 75 to 845.0%  Unlock4.5%
 Age 85 and over  Unlock1.1%1.9%
 space1
 Race
 Petaluma, CASomerville, MAUnited States
 White68.1%  Unlock59.4%
 Black  Unlock4.8%12.2%
 Asian4.1%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.9%0.4%
 Two or More Races4.4%  Unlock3.2%
 Hispanic  Unlock12.3%18.4%
 space2
 Marriage & Family
 Petaluma, CASomerville, MAUnited States
 Married Population53.4%  Unlock49.8%
     Currently Married  Unlock32.4%48.0%
 Married but Separated1.5%  Unlock1.8%
 Single Population  Unlock66.6%50.2%
 Never Married30.0%  Unlock33.8%
 Divorced  Unlock5.7%10.8%
 Widowed5.0%  Unlock5.6%
 space5
 Household Size  Unlock2.252.60
 Households22,756  Unlock124,010,992
 Family Households  Unlock13,63980,755,759
     Married couple, w/children34.8%  Unlock30.5%
     Married couple, no children  Unlock49.9%42.9%
 Non Family Households7,697  Unlock43,255,233
     Single householder, w/children  Unlock9.8%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 Somerville    3 Reviews
Jen · Somerville, MA
Ready to move on...but where?
Over 14 years ago

I've lived in Somerville/Cambridge for 10 years, the last 4.5 with my husband in Spring Hill. It really is a great place to live if you are in your 20s & 30s: it is  More

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EBlisster · Somerville, MA
Not too bad a place to live
Over 17 years ago

Living in Somerville is OK. I'm not a 'city' person and I would rather be out in the country some place, but it's not too bad here. I'm in my early 50s and own a house.  More

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Abhd · Somerville, MA
Davis Square
Over 17 years ago

we are midwest transplants to the Boston area and lucked out by finding this great little neighborhood - right on the train line, little stores and good community - we  More

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Learn More About Petaluma, California
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Learn More About Somerville, Massachusetts
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