Is St. Louis, MO cheaper than Kailua CDP (Honolulu County), HI?

Based on cost of living data, St. Louis, MO is 52.7% cheaper than Kailua CDP (Honolulu County), HI. This translates to saving $3953 per month.

What salary do I need in St. Louis, MO to live like I do in Kailua CDP (Honolulu County), HI?

If you earn $150,000 in Kailua CDP (Honolulu County), HI, you'd need approximately $102,565.543 in St. Louis, MO to maintain the same standard of living.

How does housing cost compare between Kailua CDP (Honolulu County), HI and St. Louis, MO?

Housing in St. Louis, MO is 71.8% cheaper than in Kailua CDP (Honolulu County), HI. For a two-bedroom apartment, rent is $1,160/month in St. Louis, MO compared to $2,349/month in Kailua CDP (Honolulu County), HI.

How much can I save per month by moving from Kailua CDP (Honolulu County), HI to St. Louis, MO?

Moving from Kailua CDP (Honolulu County), HI to St. Louis, MO could save you approximately $3953 per month, or $47434 per year, based on a $150,000 salary.

Kailua CDP (Honolulu County), HI vs St. Louis, MO: Cost of Living Comparison 2026

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Cost of Living Comparison 2026

📍 Kailua CDP (Honolulu County), HI — COL adjusted from Honolulu, HI area + state data

Current salary in Kailua CDP (Honolulu County), HI

Numbers update automatically as you type

You'd save $4.0K/month moving to St. Louis, MO

$150.0K in your current city equals $102.6K in St. Louis, MO

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

Overall Cost

↓ 52.7%

Less expensive

Monthly Impact

$3,953

Savings

Annual Impact

$47.4K

Per year

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

Kailua CDP (Honolulu County), HI

Population:41K

Cost Index:100

Median Home:$657K

St. Louis, MO

Population:302K

Cost Index:47

Median Home:$145K

Kailua CDP (Honolulu County), HI

The Aloha State

41K

Population

State Tax

Yes

Located in Hawaii, this city has a population of 41K residents.

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: Kailua CDP (Honolulu County), HI vs St. Louis, MO

Category	Kailua CDP (Honolulu County), HI	St. Louis, MO	Difference	Change
🏠Housing	$6,643/mo	$1,871/mo	↓ $4,772less	71.8%
🛒Groceries	$1,629/mo	$949/mo	↓ $680less	41.7%
🚗Transportation	$1,745/mo	$1,216/mo	↓ $529less	30.3%
⚡All Utilities	$902/mo	$535/mo	↓ $366less	40.6%
📦Other	$1,851/mo	$1,607/mo	↓ $244less	13.2%
🏥Healthcare	$690/mo	$527/mo	↓ $163less	23.6%

🏠Housing

↓ 71.8%

Kailua CDP (Honolulu County), HI

$6,643

St. Louis, MO

$1,871

Difference

$4,772

less

🛒Groceries

↓ 41.7%

Kailua CDP (Honolulu County), HI

$1,629

St. Louis, MO

$949

Difference

$680

less

🚗Transportation

↓ 30.3%

Kailua CDP (Honolulu County), HI

$1,745

St. Louis, MO

$1,216

Difference

$529

less

⚡All Utilities

↓ 40.6%

Kailua CDP (Honolulu County), HI

$902

St. Louis, MO

$535

Difference

$366

less

📦Other

↓ 13.2%

Kailua CDP (Honolulu County), HI

$1,851

St. Louis, MO

$1,607

Difference

$244

less

🏥Healthcare

↓ 23.6%

Kailua CDP (Honolulu County), HI

$690

St. Louis, MO

$527

Difference

$163

less

🏛️ Local Income Taxes

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

Kailua CDP (Honolulu County), HI 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$1,499

To$910

↓ $589

1 Bed

From$1,782

To$950

↓ $832

2 Bed

From$2,349

To$1,160

↓ $1,189

3 Bed

From$3,403

To$1,490

↓ $1,913

St. Louis, MOZIP-level data

1BR range: $800–$1,480/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.

$13,459

Monthly in Kailua CDP (Honolulu County), HI

$6,705

Monthly in St. Louis, MO

$6,753

Difference

Home Values

Kailua CDP (Honolulu County)

St. Louis

Median Value

$145K

YoY Change

↓ -0.8%

5-Year Change

↑ +10.9%

Price Range

$38K - $302K

Calculate payment - St. Louis

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

Tax Comparison

Annual tax burden comparison at $150.0K salary

Tax Savings

↑ $3.7K

Per year

Monthly Difference

$308

More take-home

Effective Rate Diff

2.5%

Rate difference

Kailua CDP (Honolulu County), HI

Federal Income Tax

Effective: 18.9%

$25.5K

Hawaii State Tax

Effective: 7.8%

$11.6K

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 32.4%

$48.6K

Take-Home Pay

$8,446/month

$101.4K

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

Kailua CDP (Honolulu County), HI Tax Rates

Sales Tax:4.5%

Property Tax:0.3%

St. Louis, MO Tax Rates

Sales Tax:8.2%

Property Tax:1.0%

💡 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.