St. Petersburg is 37% cheaper than Downey.
When comparing St. Petersburg, FL and Downey, CA, the overall cost of living indices are 106 and 169 respectively (national median = 100). Rent is $350/month cheaper in St. Petersburg, saving renters about $4,200/year.
Median household income is $14,282/year higher in Downey. Home values also differ significantly — the median in St. Petersburg is $331,500 compared to $728,500 in Downey.
Florida has no state income tax, giving St. Petersburg residents a significant tax advantage over California's 13.3% rate.
St. Petersburg vs Downey — common questions
Other cost of living comparisons for St. Petersburg and Downey