Pittsburgh is 28% cheaper than St. Petersburg.
When comparing Pittsburgh, PA and St. Petersburg, FL, the overall cost of living indices are 76 and 106 respectively (national median = 100). Rent is $321/month cheaper in Pittsburgh, saving renters about $3,852/year.
Median household income is $8,981/year higher in St. Petersburg. Home values also differ significantly — the median in Pittsburgh is $193,200 compared to $331,500 in St. Petersburg.
Florida has no state income tax, giving St. Petersburg residents a significant tax advantage over Pennsylvania's 3.07% rate.
Pittsburgh vs St. Petersburg — common questions
Other cost of living comparisons for Pittsburgh and St. Petersburg