Cost of Living in Round Rock
Sources genuinely disagree on whether Round Rock runs above or below the national cost-of-living average -- one widely cited index puts it about 8% above the U.S. average, while another calculator puts it roughly 7% below. What multiple sources agree on: groceries and healthcare run cheaper than the national average here, while utilities run somewhat higher, and housing plus property taxes are the swing factor that explains most of the disagreement.
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Learn moreA Real Spread in the Headline Number
Salary.com and RentCafe cite a Round Rock cost-of-living index around 108, meaning overall costs run about 8% above the U.S. average, driven by housing and property taxes. A separate source (roundrockhomes.co, a local real-estate site) cites Round Rock running about 7.1% lower than the U.S. average and roughly 1% below the Texas state average for the same general period. These are genuinely conflicting reads on the same underlying question -- treat 'housing and property taxes are the main driver either way' as the durable takeaway rather than trusting either specific index number as precise.
Where the Costs Land, Category by Category
One of the sources above breaks out specific categories: housing runs about 8% cheaper than the U.S. average, groceries about 14% cheaper, and healthcare about 8% cheaper -- but utilities run roughly 9% pricier than the U.S. average. Estimated total monthly costs for 2026 are cited around $2,740 for a single person and $6,033 for a family of four, up about 1% from 2025. As with the headline index, treat these as directional estimates from a single calculator methodology rather than precise, cross-verified figures.
Housing and Property Taxes Are the Swing Factor
Regardless of which overall index is closer to accurate, Round Rock's median home price runs meaningfully below Austin city-proper (see the housing-market topic page and the base record's own Austin comparison), while Williamson County property taxes run well above the national average and, for Round Rock specifically, land toward the higher end of the county's 1.9%-2.4% combined-effective-rate range because Round Rock ISD's own rate runs above the county average (see the taxes topic page). This tension -- relatively affordable housing purchase price against a comparatively high property-tax bill -- is the real story behind the disputed headline index, more than either single number captures.
No State Income Tax
Texas has no state personal income tax, the single largest structural cost-of-living advantage Round Rock carries relative to income-tax states, and it applies regardless of which disputed cost-of-living index above is trusted most. It does not offset the property-tax side of the ledger for homeowners specifically -- see the taxes topic page for that fuller picture.
Key takeaways
- Round Rock's overall cost-of-living index is genuinely disputed: Salary.com/RentCafe cite ~108 (about 8% above the U.S. average) while roundrockhomes.co cites roughly 7% below -- treat the exact figure as unsettled.
- One source breaks out groceries (~14% cheaper) and healthcare (~8% cheaper) as running below the U.S. average, while utilities run ~9% pricier -- treat these as directional, single-source estimates.
- Housing purchase prices run well below Austin proper, but Williamson County property taxes -- especially in Round Rock ISD -- run toward the higher end of the county's cited 1.9%-2.4% range, which is likely the real driver behind the disputed headline index either way.
- No state income tax is Round Rock's biggest structural cost advantage, independent of which cost-of-living index is used -- but it doesn't offset the property-tax side of the ledger for homeowners.
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