St. Petersburg is 66% more expensive than Montgomery.
When comparing St. Petersburg, FL and Montgomery, AL, the overall cost of living indices are 106 and 64 respectively (national median = 100). Rent is $483/month cheaper in Montgomery, saving renters about $5,796/year.
Median household income is $17,431/year higher in St. Petersburg. Home values also differ significantly — the median in St. Petersburg is $331,500 compared to $148,500 in Montgomery.
Florida has no state income tax, giving St. Petersburg residents a significant tax advantage over Alabama's 5.0% rate.
St. Petersburg vs Montgomery — common questions
Other cost of living comparisons for St. Petersburg and Montgomery