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Back Bay vs Somerville

Neighborhood comparison in Boston, United States

Back Bay

107.1
COLI Index
More Expensive
VS

Somerville

78.3
COLI Index
More Affordable

Side-by-Side Comparison

1.30x
Back Bay Multiplier
0.95x
Somerville Multiplier
$3,640
Est. 1BR Rent
$2,660
Est. 1BR Rent
$80,325
$75K Equivalent
$58,725
$75K Equivalent

Cost Comparison

Back Bay
1.30x
Somerville
0.95x

Back Bay is 27% more expensive than Somerville within Boston. Living in Somerville instead of Back Bay could save you significantly on rent and daily expenses.

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Data Sources: Cost of living data from Numbeo · Expatistan. Rent from Numbeo Property Prices. Tax rates from OECD Taxing Wages · U.S. Bureau of Labor Statistics · U.S. Census Bureau. Salary data from BLS · Glassdoor. Exchange rates from the ECB. Updated 2026-02-28. All figures are estimates.