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Cost of Living Comparison 2026

Data: HUD rent estimates, BLS cost of living

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You'd save $875/month moving to St. Louis, MO

$150.0K in your current city equals $139.5K in St. Louis, MO

Rent data from HUD ZIP-level estimates Β· COL index from Austin-Round Rock-Georgetown, TX area
Overall Cost
↓ 11.7%
Less expensive
Monthly Impact
$875
Savings
Annual Impact
$10.5K
Per year

Based on monthly living costs (rent, groceries, utilities, transport, healthcare). Home purchase prices shown separately below.

Round Rock, TX

Population:130K
Cost Index:
100
100 = national average
Median Home:$404K

St. Louis, MO

Population:302K
Cost Index:
88
(12% below avg)
Median Home:$145K

Round Rock, TX

The Lone Star State

130K
Population
State Tax
No Income Tax

Located in Texas, this city has a population of 130K residents.

πŸ’‘ Advantage: Texas has no state income tax!

St. Louis, MO

The Show-Me State

302K
Population
State Tax
Yes

Located in Missouri, this city has a population of 302K residents.

Cost Breakdown by Category

Annual spending: Round Rock, TX vs St. Louis, MO

Housing
↓ 24.6%
Round Rock, TX
$2,482
St. Louis, MO
$1,871
Difference
$611
less
Other
↓ 3.5%
Round Rock, TX
$1,665
St. Louis, MO
$1,607
Difference
$57.71
less
Healthcare
↓ 8.5%
Round Rock, TX
$576
St. Louis, MO
$527
Difference
$48.93
less
Transportation
↓ 1.0%
Round Rock, TX
$1,228
St. Louis, MO
$1,216
Difference
$12.09
less
Groceries
↑ 1.2%
Round Rock, TX
$938
St. Louis, MO
$949
Difference
$11.24
more
All Utilities
↑ 1.2%
Round Rock, TX
$529
St. Louis, MO
$535
Difference
$6.51
more

πŸ›οΈ Local Income Taxes

St. Louis, MO: St. Louis Earnings Tax$1,500/yr (1.0%)

Round Rock, TX has no local income tax.

Local taxes are in addition to state income tax. Not all cities levy local income taxes.

🏠Rent Comparison

Studio
From$1,252
To$910
↓ $342
1 Bed
From$1,329
To$950
↓ $379
2 Bed
From$1,577
To$1,160
↓ $417
3 Bed
From$1,999
To$1,490
↓ $509
Round Rock, TXZIP-level data

1BR range: $1,510–$1,760/mo

St. Louis, MOZIP-level data

1BR range: $800–$1,480/mo

πŸ’‘ Note: Rent prices are based on HUD Fair Market Rent data and represent median costs. Actual prices vary by neighborhood, amenities, and condition. Source: HUD Small Area Fair Market Rents FY2026.

$7,418
Monthly in Round Rock, TX
$6,705
Monthly in St. Louis, MO
$712
Difference

Home Values

Round Rock
St. Louis
$404K
Median Value
$145K
↓ -5.4%
YoY Change
↓ -0.8%
↑ +21.6%
5-Year Change
↑ +10.9%
$335K - $474K
Price Range
$38K - $302K

Homes in St. Louis are 64% less expensive than Round Rock

Source: Zillow Home Value Index (ZHVI), January 2026

Tax Comparison

Annual tax burden comparison at $150.0K salary

Tax Savings
↓ $7.9K
More taxes
Monthly Difference
$661
Less take-home
Effective Rate Diff
5.3%
Rate difference

Round Rock, TX

Federal Income Tax
Effective: 18.9%
$25.5K
Texas State Tax
No state income tax
$0
FICA Taxes
Social Security + Medicare
$11.5K
Total Taxes
Effective: 24.7%
$37.0K
Take-Home Pay
$9,416/month
$113.0K

St. Louis, MO

Federal Income Tax
Effective: 18.9%
$25.5K
Missouri State Tax
Effective: 5.3%
$7.9K
FICA Taxes
Social Security + Medicare
$11.5K
Total Taxes
Effective: 30.0%
$44.9K
Take-Home Pay
$8,755/month
$105.1K

Additional Tax Information

Round Rock, TX Tax Rates

Sales Tax:8.2%
Property Tax:1.8%

St. Louis, MO Tax Rates

Sales Tax:8.2%
Property Tax:1.0%

πŸ’‘ Note: Tax calculations are estimates based on 2024/2025 tax brackets for single filers with standard deduction. Actual taxes may vary based on filing status, deductions, credits, and local variations.

Environment

Round Rock
St. Louis
52 Moderate
Air Quality
54 Moderate
42.6%
Good Air Days
38%
98 High
Climate Risk
99 High
🌊🌑πŸŒͺ
Top Hazards
🌊🌑🫨
β–²+2.5Β°F
2050 Outlook
β–²+3.0Β°F
98 days
Heat Days >95Β°F
39 days
β–²+2.5Β°F
2050 Outlook
β–²+3.0Β°F
98 days
Heat Days >95Β°F
39 days

What to Consider When Moving from Round Rock, TX to St. Louis, MO

Relocating from Round Rock, TX to St. Louis, MO involves more than just comparing rent prices. While the overall cost of living is about 12% lower in St. Louis, MO, your actual experience will depend on your lifestyle, job situation, and priorities. Here are the key factors to weigh before making the move.

Housing & Rent

Housing is typically the largest line item in any budget, and it’s where the biggest differences show up between cities. In this comparison, housing in St. Louis, MO is 25% cheaper than in Round Rock, TX. Keep in mind that neighborhood choice within a city can swing rent by 30–50%, so research specific areas β€” not just city averages β€” before signing a lease. If you’re buying, factor in property tax rates, which vary significantly by county and state.

Job Market & Salary Adjustments

A lower cost of living doesn’t help if your salary drops proportionally. Before committing to a move, research whether employers in St. Louis, MO pay comparable wages for your role. Remote workers may keep their current salary, but some companies adjust pay based on location. Use the salary calculator above to see what you’d need to earn in St. Louis, MO to match your current standard of living in Round Rock, TX.

Taxes & Take-Home Pay

State income tax, property tax, and sales tax all affect how far your paycheck stretches. Some states have no income tax but make up for it with higher property or sales taxes. The tax comparison section above breaks down how your take-home pay would change. Don’t forget about vehicle registration fees, tolls, and other state-specific costs that add up over a year.

Quality of Life & Lifestyle Fit

Numbers only tell part of the story. Consider climate preferences, commute times, proximity to family, school quality if you have children, healthcare access, and the general β€œfeel” of a city. A place that’s 15% cheaper might not be worth it if it means a longer commute or fewer amenities you value. If possible, visit St. Louis, MO for a week before making a final decision β€” experiencing the day-to-day rhythm matters more than any spreadsheet.

Frequently Asked Questions: Round Rock, TX vs St. Louis, MO

Is St. Louis, MO cheaper than Round Rock, TX?

Yes, St. Louis, MO is about 11.7% cheaper than Round Rock, TX. You could save approximately $875/month on a $150,000 salary. Housing costs are 25% lower in St. Louis, MO.

What salary do I need in St. Louis, MO to match my lifestyle in Round Rock, TX?

If you currently earn $150,000 in Round Rock, TX, you would need approximately $139,499 in St. Louis, MO to maintain the same standard of living. This accounts for differences in housing, groceries, transportation, utilities, healthcare, and other typical expenses. Use the salary input above to adjust this based on your actual income.

How does rent compare between Round Rock, TX and St. Louis, MO?

A two-bedroom apartment averages $1,577/month in Round Rock, TX compared to $1,160/month in St. Louis, MO. One-bedroom apartments are $1,329/month in Round Rock, TX vs $950/month in St. Louis, MO. These are area-wide medians β€” specific neighborhoods can vary significantly. Check the ZIP-level rent breakdown above for more granular data.

Are groceries more expensive in Round Rock, TX or St. Louis, MO?

Groceries are about 1% more expensive in St. Louis, MO than in Round Rock, TX, which adds roughly $11.24/month to a typical household budget. This covers common items like produce, dairy, meat, and pantry staples based on BLS consumer expenditure data.

What is the best time to move from Round Rock, TX to St. Louis, MO?

Most people find that moving during the off-season (October through March) results in lower moving costs, since demand for movers and rental trucks drops. If you're renting, you may also find more negotiable lease terms during winter months. However, if you have school-age children, summer moves allow for a smoother school transition. For the best combination of availability and price, consider moving in early fall or late spring.

πŸ’° See how taxes change too β€” compare take-home pay between Texas and Missouri on TaxTakeHome.com

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