Is San Antonio, TX cheaper than Rock Island, IL?

Based on cost of living data, San Antonio, TX is 0.2% cheaper than Rock Island, IL. The two cities have very similar living costs.

What salary do I need in San Antonio, TX to live like I do in Rock Island, IL?

If you earn $150,000 in Rock Island, IL, you'd need approximately $149,787.759 in San Antonio, TX to maintain the same standard of living.

How does housing cost compare between Rock Island, IL and San Antonio, TX?

Housing in San Antonio, TX is 2.5% cheaper than in Rock Island, IL. For a two-bedroom apartment, rent is $1,470/month in San Antonio, TX compared to $827/month in Rock Island, IL.

How much can I save per month by moving from Rock Island, IL to San Antonio, TX?

Moving from Rock Island, IL to San Antonio, TX could save you approximately $18 per month, or $212 per year, based on a $150,000 salary.

Rock Island, IL vs San Antonio, TX: Cost of Living Comparison 2026

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Cost of Living Comparison 2026

📍 Rock Island, IL — ZIP-level rent data · COL adjusted from Madison, WI area

Current salary in Rock Island, IL

Numbers update automatically as you type

You'd save $17.69/month moving to San Antonio, TX

$150.0K in your current city equals $149.8K in San Antonio, TX

Rent data from HUD ZIP-level estimates · COL index from area

Overall Cost

↓ 0.2%

Less expensive

Monthly Impact

$17.69

Savings

Annual Impact

$212

Per year

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

Rock Island, IL

Population:36K

Cost Index:100

Median Home:$122K

San Antonio, TX

Population:1547K

Cost Index:100

Median Home:$215K

Rock Island, IL

The Prairie State

36K

Population

State Tax

Yes

Located in Illinois, this city has a population of 36K residents.

San Antonio, TX

The Lone Star State

1.5M

Population

State Tax

No Income Tax

Located in Texas, this city has a population of 1.5M residents.

💡 Advantage: Texas has no state income tax!

Cost Breakdown by Category

Annual spending: Rock Island, IL vs San Antonio, TX

Category	Rock Island, IL	San Antonio, TX	Difference	Change
🏥Healthcare	$670/mo	$527/mo	↓ $143less	21.4%
📦Other	$1,556/mo	$1,647/mo	↑ $91.19more	5.9%
🚗Transportation	$1,222/mo	$1,287/mo	↑ $64.51more	5.3%
🏠Housing	$2,154/mo	$2,100/mo	↓ $53.93less	2.5%
⚡All Utilities	$474/mo	$496/mo	↑ $21.96more	4.6%
🛒Groceries	$894/mo	$913/mo	↑ $19.22more	2.1%

🏥Healthcare

↓ 21.4%

Rock Island, IL

$670

San Antonio, TX

$527

Difference

$143

less

📦Other

↑ 5.9%

Rock Island, IL

$1,556

San Antonio, TX

$1,647

Difference

$91.19

🚗Transportation

↑ 5.3%

Rock Island, IL

$1,222

San Antonio, TX

$1,287

Difference

$64.51

🏠Housing

↓ 2.5%

Rock Island, IL

$2,154

San Antonio, TX

$2,100

Difference

$53.93

less

⚡All Utilities

↑ 4.6%

Rock Island, IL

$474

San Antonio, TX

$496

Difference

$21.96

🛒Groceries

↑ 2.1%

Rock Island, IL

$894

San Antonio, TX

$913

Difference

$19.22

🏠Rent Comparison

Studio

From$591

To$1,110

↑ $519

1 Bed

From$672

To$1,210

↑ $538

2 Bed

From$827

To$1,470

↑ $643

3 Bed

From$1,085

To$1,890

↑ $805

Rock Island, ILZIP-level data

1BR range: $910–$910/mo

San Antonio, TXZIP-level data

1BR range: $840–$1,770/mo

💡 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.

$6,970

Monthly in Rock Island, IL

$6,969

Monthly in San Antonio, TX

$0.29

Difference

Home Values

Rock Island

San Antonio

$122K

Median Value

$215K

↑ +3.2%

YoY Change

↓ -2.9%

↑ +19.8%

5-Year Change

↑ +16.7%

$122K

Price Range

$107K - $905K

Homes in San Antonio are 77% more expensive than Rock Island

Calculate payment - Rock Island Calculate payment - San Antonio

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

Tax Comparison

Annual tax burden comparison at $150.0K salary

Tax Savings

↑ $7.4K

Per year

Monthly Difference

$619

More take-home

Effective Rate Diff

4.9%

Rate difference

Rock Island, IL

Federal Income Tax

Effective: 18.9%

$25.5K

Illinois State Tax

Effective: 5.0%

$7.4K

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 29.6%

$44.4K

Take-Home Pay

$8,797/month

$105.6K

San Antonio, TX

Federal Income Tax

Effective: 18.9%

$25.5K

Texas State Tax

No state income tax

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 24.7%

$37.0K

Take-Home Pay

$9,416/month

$113.0K

Additional Tax Information

Rock Island, IL Tax Rates

Sales Tax:8.8%

Property Tax:2.2%

San Antonio, TX Tax Rates

Sales Tax:8.2%

Property Tax:1.8%

💡 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.