Cost of Living: St. Petersburg, FL vs Round Rock, TX (2026)

St. Petersburg

Florida
106
VS

Round Rock

Texas
122

St. Petersburg is 13% cheaper than Round Rock.

$1,542/mo ↓ 10%
Median Rent
$1,713/mo ↑ 11%
$73,118/yr ↓ 25%
Median Income
$97,187/yr ↑ 33%
$331,500 ↓ 14%
Home Value
$383,700 ↑ 16%
$1,435/mo ↓ 19%
Owner Costs
$1,781/mo ↑ 24%
260,646
Population
124,288

Tax Comparison

0%
Income Tax
0%
6.0%
State Sales Tax
6.25%
0.86%
Property Tax
1.6%

Affordability

25.3%
rent-to-income
Affordability
21.2%
rent-to-income

Detailed Comparison

When comparing St. Petersburg, FL and Round Rock, TX, the overall cost of living indices are 106 and 122 respectively (national median = 100). Rent is $171/month cheaper in St. Petersburg, saving renters about $2,052/year.

Median household income is $24,069/year higher in Round Rock. Home values also differ significantly — the median in St. Petersburg is $331,500 compared to $383,700 in Round Rock.

Frequently Asked Questions

St. Petersburg vs Round Rock — common questions

Is St. Petersburg or Round Rock cheaper to live in?
Based on our cost index, St. Petersburg is cheaper to live in with an index of 106 compared to 122 (US average = 100).
What is the rent difference between St. Petersburg and Round Rock?
Median rent in St. Petersburg is $1,542/month and in Round Rock it's $1,713/month — a difference of $171/month.
Which city has higher income, St. Petersburg or Round Rock?
Median household income is $73,118 in St. Petersburg and $97,187 in Round Rock. Median household income is $24,069/year higher in Round Rock.
How do taxes compare between Florida and Texas?
Florida has 0% income tax, 6.0% sales tax, and 0.86% property tax. Texas has 0% income tax, 6.25% sales tax, and 1.6% property tax.
Should I move to St. Petersburg or Round Rock?
It depends on your priorities. St. Petersburg has a cost index of 106 with median rent of $1,542/mo, while Round Rock has a cost index of 122 with rent of $1,713/mo. Consider income potential, tax burden, and lifestyle preferences alongside raw cost data.
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