Mercer Island, WA vs South San Francisco, CA

Side-by-side comparison of housing, income, commute, safety, and quality of life.

Score Snapshot

No universal winner

Scores summarize the published model. Use the objective metric differences below and your own priorities to choose.

Mercer Island

64.9

#1667 nationally

South San Francisco

63.9

#1734 nationally

Mercer Island leads in crime level (1.0 vs 8.2). South San Francisco leads in walk score (63 vs 33). Mercer Island leads in median household income ($190,985 vs $127,062).

Metric-by-Metric Breakdown

Metric	Mercer Island, WA	South San Francisco, CA
WhereAtHome Score	64.9 (#1667)	63.9 (#1734)
Population	24,742	63,123
Typical Home Value (ZHVI)	$2,295,406	$1,235,804
Median Household Income	$190,985	$127,062
Average Commute	27 min	27.9 min
Walk Score	33	63
Crime Level	1.0	8.2
School Rating	N/A	N/A
Cost of Living Index	264	207
Political lean County 2024 presidential margin — context only, not scored	D+51.7	D+50.3