San Francisco is 58% more expensive than Downey.
When comparing San Francisco, CA and Downey, CA, the overall cost of living indices are 267 and 169 respectively (national median = 100). Rent is $527/month cheaper in Downey, saving renters about $6,324/year.
Median household income is $54,046/year higher in San Francisco. Home values also differ significantly — the median in San Francisco is $1,380,500 compared to $728,500 in Downey.
Both cities share the same state tax structure since they are in California.
San Francisco vs Downey — common questions
Other cost of living comparisons for San Francisco and Downey