Cost of living in Duncan, OK — Housing, Rent & Index

The median home value in Duncan, OK is $135,002 as of 2026-04. That places Duncan below the US average for housing cost, with a cost index of approximately 38 versus a national baseline of 100.

Over the past 12 months, the median home value in Duncan has moved sideways, and over the past five years it has averaged +7.4% annual growth. The current price sits -1.2% from its 5-year peak in 2025-02.

Renters pay a median of $904 per month in Duncan. Rents have changed — over the last year and averaged — per year over five years.

Beyond housing, day-to-day costs in Duncan are shaped by state and local taxes, utility rates, transportation, and groceries. This page focuses on the housing component, which is the largest single line in most household budgets and the easiest to compare across cities using consistent national data.