St. Petersburg is 32% cheaper than Vallejo.
When comparing St. Petersburg, FL and Vallejo, CA, the overall cost of living indices are 106 and 155 respectively (national median = 100). Rent is $471/month cheaper in St. Petersburg, saving renters about $5,652/year.
Median household income is $16,378/year higher in Vallejo. Home values also differ significantly — the median in St. Petersburg is $331,500 compared to $557,500 in Vallejo.
Florida has no state income tax, giving St. Petersburg residents a significant tax advantage over California's 13.3% rate.
St. Petersburg vs Vallejo — common questions
Other cost of living comparisons for St. Petersburg and Vallejo