Riverside is 36% more expensive than St. Petersburg.
When comparing Riverside, CA and St. Petersburg, FL, the overall cost of living indices are 144 and 106 respectively (national median = 100). Rent is $270/month cheaper in St. Petersburg, saving renters about $3,240/year.
Median household income is $15,457/year higher in Riverside. Home values also differ significantly — the median in Riverside is $542,100 compared to $331,500 in St. Petersburg.
Florida has no state income tax, giving St. Petersburg residents a significant tax advantage over California's 13.3% rate.
Riverside vs St. Petersburg — common questions
Other cost of living comparisons for Riverside and St. Petersburg