Cost of Living: Round Rock, TX vs Billings, MT (2026)

Round Rock

Texas
122
VS

Billings

Montana
86

Round Rock is 42% more expensive than Billings.

$1,713/mo ↑ 56%
Median Rent
$1,097/mo ↓ 36%
$97,187/yr ↑ 35%
Median Income
$71,855/yr ↓ 26%
$383,700 ↑ 23%
Home Value
$311,800 ↓ 19%
$1,781/mo ↑ 51%
Owner Costs
$1,177/mo ↓ 34%
124,288
Population
118,321

Tax Comparison

0%
Income Tax
6.75%
6.25%
State Sales Tax
0%
1.6%
Property Tax
0.74%

Affordability

21.2%
rent-to-income
Affordability
18.3%
rent-to-income

Detailed Comparison

When comparing Round Rock, TX and Billings, MT, the overall cost of living indices are 122 and 86 respectively (national median = 100). Rent is $616/month cheaper in Billings, saving renters about $7,392/year.

Median household income is $25,332/year higher in Round Rock. Home values also differ significantly — the median in Round Rock is $383,700 compared to $311,800 in Billings.

Texas has no state income tax, giving Round Rock residents a significant tax advantage over Montana's 6.75% rate.

Frequently Asked Questions

Round Rock vs Billings — common questions

Is Round Rock or Billings cheaper to live in?
Based on our cost index, Billings is cheaper to live in with an index of 86 compared to 122 (US average = 100).
What is the rent difference between Round Rock and Billings?
Median rent in Round Rock is $1,713/month and in Billings it's $1,097/month — a difference of $616/month.
Which city has higher income, Round Rock or Billings?
Median household income is $97,187 in Round Rock and $71,855 in Billings. Median household income is $25,332/year higher in Round Rock.
How do taxes compare between Texas and Montana?
Texas has 0% income tax, 6.25% sales tax, and 1.6% property tax. Montana has 6.75% income tax, 0% sales tax, and 0.74% property tax.
Should I move to Round Rock or Billings?
It depends on your priorities. Round Rock has a cost index of 122 with median rent of $1,713/mo, while Billings has a cost index of 86 with rent of $1,097/mo. Consider income potential, tax burden, and lifestyle preferences alongside raw cost data.
View Round Rock details → View Billings details →

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