Is Phoenix, AZ cheaper than Castle Rock, CO?

Based on cost of living data, Phoenix, AZ is 1.3% cheaper than Castle Rock, CO. The two cities have very similar living costs.

What salary do I need in Phoenix, AZ to live like I do in Castle Rock, CO?

If you earn $150,000 in Castle Rock, CO, you'd need approximately $148,814.324 in Phoenix, AZ to maintain the same standard of living.

How does housing cost compare between Castle Rock, CO and Phoenix, AZ?

Housing in Phoenix, AZ is 0.3% more expensive than in Castle Rock, CO. For a two-bedroom apartment, rent is $1,750/month in Phoenix, AZ compared to $1,754/month in Castle Rock, CO.

How much can I save per month by moving from Castle Rock, CO to Phoenix, AZ?

Moving from Castle Rock, CO to Phoenix, AZ could save you approximately $99 per month, or $1186 per year, based on a $150,000 salary.

Castle Rock, CO vs Phoenix, AZ: Cost of Living Comparison 2026

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Cost of Living Comparison 2026

📍 Castle Rock, CO — ZIP-level rent data · COL adjusted from Denver, CO area

Current salary in Castle Rock, CO

Numbers update automatically as you type

You'd save $98.81/month moving to Phoenix, AZ

$150.0K in your current city equals $148.8K in Phoenix, AZ

Rent data from HUD ZIP-level estimates · COL index from Denver-Aurora-Lakewood, CO area

Overall Cost

↓ 1.3%

Less expensive

Monthly Impact

$98.81

Savings

Annual Impact

$1.2K

Per year

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

Castle Rock, CO

Population:81K

Cost Index:100

Median Home:$604K

Phoenix, AZ

Population:1608K

Cost Index:99

Median Home:$414K

Castle Rock, CO

The Centennial State

81K

Population

State Tax

Yes

Located in Colorado, this city has a population of 81K residents.

Phoenix, AZ

The Grand Canyon State

1.6M

Population

State Tax

Yes

Climate

Hot desert

Notable Facts

•Fastest growing major city
•Desert metropolis
•Spring training capital

Major Industries

TechnologyHealthcareTourismManufacturing

Cost Breakdown by Category

Annual spending: Castle Rock, CO vs Phoenix, AZ

Category	Castle Rock, CO	Phoenix, AZ	Difference	Change
🚗Transportation	$1,390/mo	$1,489/mo	↑ $99.37more	7.2%
⚡All Utilities	$506/mo	$561/mo	↑ $55.03more	10.9%
🛒Groceries	$1,004/mo	$963/mo	↓ $40.26less	4.0%
🏥Healthcare	$616/mo	$589/mo	↓ $27.60less	4.5%
📦Other	$1,687/mo	$1,677/mo	↓ $9.62less	0.6%
🏠Housing	$2,779/mo	$2,788/mo	↑ $8.98more	0.3%

🚗Transportation

↑ 7.2%

Castle Rock, CO

$1,390

Phoenix, AZ

$1,489

Difference

$99.37

⚡All Utilities

↑ 10.9%

Castle Rock, CO

$506

Phoenix, AZ

$561

Difference

$55.03

🛒Groceries

↓ 4.0%

Castle Rock, CO

$1,004

Phoenix, AZ

$963

Difference

$40.26

less

🏥Healthcare

↓ 4.5%

Castle Rock, CO

$616

Phoenix, AZ

$589

Difference

$27.60

less

📦Other

↓ 0.6%

Castle Rock, CO

$1,687

Phoenix, AZ

$1,677

Difference

$9.62

less

🏠Housing

↑ 0.3%

Castle Rock, CO

$2,779

Phoenix, AZ

$2,788

Difference

$8.98

🏠Rent Comparison

Studio

From$1,382

To$1,390

↑ $8.00

1 Bed

From$1,471

To$1,510

↑ $39.00

2 Bed

From$1,754

To$1,750

↓ $4.00

3 Bed

From$2,295

To$2,330

↑ $35.00

Castle Rock, COZIP-level data

1BR range: $1,820–$1,820/mo

Phoenix, AZZIP-level data

1BR range: $1,300–$2,380/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.

$7,982

Monthly in Castle Rock, CO

$8,068

Monthly in Phoenix, AZ

$85.89

Difference

Home Values

Castle Rock

Phoenix

$604K

Median Value

$414K

↓ -2%

YoY Change

↓ -3.1%

↑ +26.2%

5-Year Change

↑ +30.2%

$604K

Price Range

$274K - $957K

Homes in Phoenix are 31% less expensive than Castle Rock

Calculate payment - Castle Rock Calculate payment - Phoenix

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

Tax Comparison

Annual tax burden comparison at $150.0K salary

Tax Savings

↑ $1.4K

Per year

Monthly Difference

$114

More take-home

Effective Rate Diff

0.9%

Rate difference

Castle Rock, CO

Federal Income Tax

Effective: 18.9%

$25.5K

Colorado State Tax

Effective: 4.4%

$6.6K

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 29.1%

$43.6K

Take-Home Pay

$8,866/month

$106.4K

Phoenix, AZ

Federal Income Tax

Effective: 18.9%

$25.5K

Arizona State Tax

Effective: 3.5%

$5.2K

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 28.2%

$42.2K

Take-Home Pay

$8,979/month

$107.8K

Additional Tax Information

Castle Rock, CO Tax Rates

Sales Tax:7.8%

Property Tax:0.5%

Phoenix, AZ Tax Rates

Sales Tax:8.5%

Property Tax:0.6%

💡 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.