Fontana, CA vs Lake Forest, CA
There is a significant gap in the cost of living between these two cities. Fontana is 29% cheaper than Lake Forest. With a cost index of 136 vs 191, the difference would have a meaningful impact on a household's monthly budget. Someone relocating from Fontana to Lake Forest should plan for substantially higher expenses across most categories.
On the housing front, median rent in Fontana is $1,733/month compared to $2,616/month in Lake Forest — a 34% difference. Home values follow the same pattern: Fontana is more affordable at $558,500 median vs $876,300.
Median household income in Fontana is $98,187 compared to $131,378 in Lake Forest (-25.3%). The higher salaries in Lake Forest partially offset the cost difference, but don't fully close the gap. Looking at affordability, residents of Fontana spend roughly 21.2% of their income on rent, less than the 23.9% in Lake Forest.
Climate-wise, both cities share similar average temperatures (66.8°F vs 64.9°F). Fontana receives more rainfall at 11.6" per year compared to 11.2" in Lake Forest.
Income & Cost
Housing
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Rent by Bedroom Size
HUD Fair Market Rent (FY 2026) — metro area average
Everyday Prices
BLS Average Prices by metro area
Climate
NOAA 30-year normals (1991-2020)