Castle Rock, CO

Very High · 167

Colorado · Population 76,614 · Updated March 2026

$1,946
Median Rent / Month
$143,031
Median Income
$621,700
Median Home Value
$2,434
Owner Costs / Month

Affordability

How far your income goes in Castle Rock

16.3%
Rent-to-Income Ratio
Affordable
Rent takes less than 25% of median income — considered affordable by HUD standards.

Tax Burden in Colorado

State-level tax rates that affect your costs

4.4%
Income Tax (Top Rate)
2.9%
Sales Tax
0.51%
Property Tax Rate

Estimated Annual Costs

$23,352
Annual Rent
$6,293
State Income Tax
$3,171
Property Tax (est.)

Cost of Living Overview

Castle Rock has a significantly higher cost of living than most US cities, driven largely by premium housing costs. With a cost index of 167 (where 100 equals the national median), Castle Rock residents can expect to pay median rent of $1,946/month while earning a median household income of $143,031/year.

The median home value in Castle Rock, CO is $621,700, with typical monthly owner costs around $2,434 including mortgage, insurance, and taxes. The median rent-to-income ratio of 16.3% means housing is relatively affordable here — well below the 30% threshold that HUD considers cost-burdened.

Colorado has a moderate income tax rate of 4.4%. Combined with a 2.9% sales tax rate and 0.51% effective property tax rate, the overall tax environment is a factor in the total cost of living in Castle Rock.

Frequently Asked Questions

Common questions about living costs in Castle Rock

What is the cost of living in Castle Rock, CO?
The cost of living index in Castle Rock, CO is 167 (US average = 100). Median monthly rent is $1,946, median household income is $143,031/year, and the median home value is $621,700.
Is Castle Rock, CO affordable?
No, Castle Rock is more expensive than the national average with a cost index of 167. The rent-to-income ratio is 16.3%—below the 30%% threshold considered affordable by HUD.
What is the average rent in Castle Rock, CO?
The median gross rent in Castle Rock, CO is $1,946 per month according to the US Census Bureau ACS 2023 data. Annual rent costs approximately $23,352.
What is the median household income in Castle Rock?
The median household income in Castle Rock, CO is $143,031 per year. This compares to the national median of approximately $80,000.
What are the taxes like in Colorado?
Colorado has a top income tax rate of 4.4%, a sales tax of 2.9%, and an effective property tax rate of 0.51%.