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Chelsea, MA vs Somerville, MA

134
Chelsea
Massachusetts
VS
-28.4%
187
Somerville
Massachusetts

There is a significant gap in the cost of living between these two cities. Chelsea is 28.4% cheaper than Somerville. With a cost index of 134 vs 187, the difference would have a meaningful impact on a household's monthly budget. Someone relocating from Chelsea to Somerville should plan for substantially higher expenses across most categories.

On the housing front, median rent in Chelsea is $1,859/month compared to $2,468/month in Somerville — a 25% difference. Home values follow the same pattern: Chelsea is more affordable at $476,500 median vs $899,400.

Median household income in Chelsea is $72,220 compared to $127,056 in Somerville (-43.2%). While Somerville is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Chelsea spend roughly 30.9% of their income on rent, more than the 23.3% in Somerville. The Somerville ratio exceeds the commonly recommended 30% threshold, which can put pressure on household budgets.

Climate-wise, both cities share similar average temperatures (51.9°F vs 51.9°F). Somerville receives more rainfall at 43.6" per year compared to 43.6" in Chelsea.

Income & Cost

Cost of Living Index
Chelsea
134
28% cheaper
Somerville
187
Median Household Income
Chelsea
$72,220
Somerville
$127,056
43% higher

Housing

Median Rent
Chelsea
$1,859
25% cheaper
Somerville
$2,468
Median Home Value
Chelsea
$476,500
47% cheaper
Somerville
$899,400
Population
Chelsea
39,460
Somerville
80,549

Salary Equivalency Calculator

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Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
Chelsea $3.09
Somerville $3.09
US $3.07
🥚
Eggs (grade A, large)
Chelsea $2.52
Somerville $2.52
US $2.50
🥛
Milk (whole)
Chelsea $4.06
Somerville $4.06
US $4.03
🍞
Bread (white)
Chelsea $1.87
Somerville $1.87
US $1.85
🍗
Chicken breast
Chelsea $4.18
Somerville $4.18
US $4.14
Electricity
Chelsea $0.33
Somerville $0.33
US $0.19

Climate

NOAA 30-year normals (1991-2020)

Avg Temp
Chelsea 51.9°F
Somerville 51.9°F
Summer High
Chelsea 82°F
Somerville 82°F
Winter Low
Chelsea 23°F
Somerville 23°F
Rainfall
Chelsea 43.6"
Somerville 43.6"
Rainy Days
Chelsea 128d
Somerville 128d