Is St. Louis, MO cheaper than Post Falls, ID?

Based on cost of living data, St. Louis, MO is 5.0% cheaper than Post Falls, ID. This translates to saving $378 per month.

What salary do I need in St. Louis, MO to live like I do in Post Falls, ID?

If you earn $150,000 in Post Falls, ID, you'd need approximately $145,458.245 in St. Louis, MO to maintain the same standard of living.

How does housing cost compare between Post Falls, ID and St. Louis, MO?

Housing in St. Louis, MO is 6.8% cheaper than in Post Falls, ID. For a two-bedroom apartment, rent is $1,160/month in St. Louis, MO compared to $1,254/month in Post Falls, ID.

How much can I save per month by moving from Post Falls, ID to St. Louis, MO?

Moving from Post Falls, ID to St. Louis, MO could save you approximately $378 per month, or $4542 per year, based on a $150,000 salary.

Post Falls, ID vs St. Louis, MO: Cost of Living Comparison 2026

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Cost of Living Comparison 2026

📍 Post Falls, ID — ZIP-level rent data · COL adjusted from Spokane, WA area

Current salary in Post Falls, ID

Numbers update automatically as you type

You'd save $378/month moving to St. Louis, MO

$150.0K in your current city equals $145.5K in St. Louis, MO

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

Overall Cost

↓ 5.0%

Less expensive

Monthly Impact

$378

Savings

Annual Impact

$4.5K

Per year

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

Post Falls, ID

Population:45K

Cost Index:100

Median Home:$512K

St. Louis, MO

Population:302K

Cost Index:95

Median Home:$145K

Post Falls, ID

The Gem State

45K

Population

State Tax

Yes

Located in Idaho, this city has a population of 45K 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: Post Falls, ID vs St. Louis, MO

Category	Post Falls, ID	St. Louis, MO	Difference	Change
🚗Transportation	$1,831/mo	$1,216/mo	↓ $616less	33.6%
🏥Healthcare	$809/mo	$527/mo	↓ $283less	34.9%
🏠Housing	$2,008/mo	$1,871/mo	↓ $137less	6.8%
📦Other	$1,485/mo	$1,607/mo	↑ $122more	8.2%
🛒Groceries	$1,060/mo	$949/mo	↓ $111less	10.4%
⚡All Utilities	$472/mo	$535/mo	↑ $63.26more	13.4%

🚗Transportation

↓ 33.6%

Post Falls, ID

$1,831

St. Louis, MO

$1,216

Difference

$616

less

🏥Healthcare

↓ 34.9%

Post Falls, ID

$809

St. Louis, MO

$527

Difference

$283

less

🏠Housing

↓ 6.8%

Post Falls, ID

$2,008

St. Louis, MO

$1,871

Difference

$137

less

📦Other

↑ 8.2%

Post Falls, ID

$1,485

St. Louis, MO

$1,607

Difference

$122

🛒Groceries

↓ 10.4%

Post Falls, ID

$1,060

St. Louis, MO

$949

Difference

$111

less

⚡All Utilities

↑ 13.4%

Post Falls, ID

$472

St. Louis, MO

$535

Difference

$63.26

🏛️ Local Income Taxes

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

Post Falls, ID 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$894

To$910

↑ $16.00

1 Bed

From$1,058

To$950

↓ $108

2 Bed

From$1,254

To$1,160

↓ $94.00

3 Bed

From$1,746

To$1,490

↓ $256

Post Falls, IDZIP-level data

1BR range: $1,290–$1,290/mo

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.

$7,666

Monthly in Post Falls, ID

$6,705

Monthly in St. Louis, MO

$960

Difference

Home Values

Post Falls

St. Louis

$512K

Median Value

$145K

↑ +1.7%

YoY Change

↓ -0.8%

↑ +32.8%

5-Year Change

↑ +10.9%

$512K

Price Range

$38K - $302K

Homes in St. Louis are 72% less expensive than Post Falls

Calculate payment - Post Falls Calculate payment - St. Louis

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

Tax Comparison

Annual tax burden comparison at $150.0K salary

Tax Savings

↑ $8.3K

Per year

Monthly Difference

$693

More take-home

Effective Rate Diff

5.5%

Rate difference

Post Falls, ID

Federal Income Tax

Effective: 18.9%

$25.5K

Idaho State Tax

Effective: 10.8%

$16.2K

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 35.5%

$53.3K

Take-Home Pay

$8,062/month

$96.7K

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

Post Falls, ID Tax Rates

Sales Tax:6.3%

Property Tax:0.7%

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.