St. Petersburg is 32% more expensive than Columbia.
When comparing St. Petersburg, FL and Columbia, MO, the overall cost of living indices are 106 and 80 respectively (national median = 100). Rent is $475/month cheaper in Columbia, saving renters about $5,700/year.
Median household income is $8,630/year higher in St. Petersburg. Home values also differ significantly — the median in St. Petersburg is $331,500 compared to $268,300 in Columbia.
Florida has no state income tax, giving St. Petersburg residents a significant tax advantage over Missouri's 4.95% rate.
St. Petersburg vs Columbia — common questions
Other cost of living comparisons for St. Petersburg and Columbia