Mortgage Rates in Castle Rock, Colorado — March 2026
Updated March 2026 | Based on Castle Rock market data and regional lending conditions
Castle Rock is a growing city in Colorado with a population of 73,158. The current 30-year fixed mortgage rate in Castle Rock is 6.67%, which is 0.02% above the national average. With a median home price of $510,000 and a 20% down payment of $102,000, homebuyers can expect a monthly principal and interest payment of approximately $2,625.
Current Mortgage Rates in Castle Rock, CO
Below are the current average mortgage rates available in the Castle Rock area as of March 2026. Rates vary by lender, credit score, and loan-to-value ratio. Use our free calculator above to see your personalized estimate.
| Loan Type | Rate | National Avg | Difference |
|---|---|---|---|
| 30-Year Fixed | 6.67% | 6.65% | +0.02% |
| 15-Year Fixed | 5.93% | 5.89% | +0.04% |
| 5/1 ARM | 6.2% | 6.15% | +0.05% |
| FHA | 6.46% | 6.25% | +0.21% |
| VA | 6.21% | 6.05% | +0.16% |
| Jumbo | 6.92% | 6.85% | +0.07% |
Castle Rock Housing Market Overview
The Castle Rock housing market is competitive with prices well above the national median. The median household income in Castle Rock is $63,500, and the cost of living index is 98.6 (national average = 100). Based on the 28% affordability rule, you would need an income of approximately $121,800 to comfortably afford the median-priced home in Castle Rock, which exceeds the current median household income.
Monthly Payment Breakdown for Castle Rock
Based on the median home price of $510,000 with 20% down ($102,000), here is what you can expect to pay monthly in Castle Rock:
15-Year vs. 30-Year Mortgage in Castle Rock
Choosing a 15-year mortgage in Castle Rock at 5.93% instead of a 30-year at 6.67% would save you $327,960 in total interest over the life of the loan. However, your monthly payment would be $3,428 instead of $2,625 — an increase of $803 per month.
Calculate Your Castle Rock Mortgage Payment
Use our free calculator to get a personalized estimate based on your loan amount, interest rate, and term.
Open Free CalculatorFrequently Asked Questions About Mortgages in Castle Rock
What are the current mortgage rates in Castle Rock, CO?
As of March 2026, the average 30-year fixed mortgage rate in Castle Rock, Colorado is 6.67%, while the 15-year fixed rate is 5.93%. FHA loans average 6.46% and VA loans 6.21%. These rates are 0.02% above the national average of 6.65%.
How much is a monthly mortgage payment in Castle Rock?
Based on the median home price of $510,000 with 20% down, the estimated monthly mortgage payment in Castle Rock is $2,625 for principal and interest. Including property taxes of $217/month, the total monthly housing cost is approximately $2,842.
What income do I need to buy a home in Castle Rock?
Using the 28% rule, you would need an annual income of approximately $121,800 to afford the median-priced home in Castle Rock at $510,000. The median household income in Castle Rock is $63,500. This means most households would need to either earn above the median or consider homes below $510,000.
Is Castle Rock a good place to buy a home in 2026?
Castle Rock offers a below-average cost of living with a cost of living index of 98.6 (national average = 100). The property tax rate in Colorado is 0.51%, which is below the national average. Castle Rock has a population of 73,158 and offers a balanced lifestyle.
Mortgage Rates in Other Colorado Cities
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Last updated: March 2026. Rates are approximate averages based on regional lending data for the Castle Rock, Colorado area. Individual rates may vary by lender, credit score, loan amount, and other factors. Use our free calculator for a personalized estimate.