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

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Highlights
- Petaluma is 0% more densely populated than Somerville.
- People are 59.7% more likely to be married in Petaluma.
- The Median Age is 11.0 years older in Petaluma.
 Somerville, MAPetaluma, CAUnited States
 Population  Unlock60,050329,725,481
 Female Population49.9%  Unlock50.5%
 Male Population50.1%  Unlock49.5%
 Median Age  Unlock42.838.4
 space3
 Population - 201075,870  Unlock309,327,143
 Population - 2000  Unlock54,548285,036,114
 Population - 199076,210  Unlock251,960,433
 Pop. 2000 to Now  Unlock11.2%15.6%
 Pop. 1990 to Now6.2%  Unlock30.8%
 space4
 Population Density  Unlock4,175.493.4
 Land Area4.1  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 Somerville, MAPetaluma, CAUnited States
 Age 0 to 44.0%  Unlock5.9%
 Age 5 to 9  Unlock5.5%6.1%
 Age 10 to 142.2%  Unlock6.6%
 Age 15 to 17  Unlock4.0%3.9%
 Age 18 to 204.7%  Unlock4.0%
 Age 21 to 24  Unlock3.0%5.2%
 Age 25 to 3433.1%  Unlock13.8%
 Age 35 to 44  Unlock13.7%12.9%
 Age 45 to 549.2%  Unlock12.6%
 Age 55 to 59  Unlock7.4%6.7%
 Age 60 to 644.3%  Unlock6.3%
 Age 65 to 74  Unlock11.1%9.6%
 Age 75 to 842.7%  Unlock4.5%
 Age 85 and over  Unlock2.6%1.9%
 space1
 Race
 Somerville, MAPetaluma, CAUnited States
 White68.8%  Unlock59.4%
 Black  Unlock1.3%12.2%
 Asian9.3%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races3.8%  Unlock3.2%
 Hispanic  Unlock21.6%18.4%
 space2
 Marriage & Family
 Somerville, MAPetaluma, CAUnited States
 Married Population33.4%  Unlock49.8%
     Currently Married  Unlock51.8%48.0%
 Married but Separated1.0%  Unlock1.8%
 Single Population  Unlock46.6%50.2%
 Never Married58.0%  Unlock33.8%
 Divorced  Unlock11.6%10.8%
 Widowed2.9%  Unlock5.6%
 space5
 Household Size  Unlock2.612.60
 Households34,523  Unlock124,010,992
 Family Households  Unlock15,05980,755,759
     Married couple, w/children28.2%  Unlock30.5%
     Married couple, no children  Unlock45.5%42.9%
 Non Family Households20,884  Unlock43,255,233
     Single householder, w/children  Unlock11.6%15.8%
     Single householder, no children12.1%  Unlock10.8%
Voting
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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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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Learn More About Somerville, Massachusetts
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