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Data on this report is based on areas within the legal city boundary, outlined in black on the map. Any additional neighborhoods shown on the map are associated with the city by name and are included for reference only.

Duncan, OK
Real Estate & Demographic Data






Duncan profile


Living in Duncan



Duncan is a medium-sized city located in the state of Oklahoma. With a population of 23,045 people and seven associated neighborhoods, Duncan is the 20th largest community in Oklahoma.

Residents will find that the city is relatively quiet. This is because it is not over-populated, and it has fewer college students, renters, and young children - all of whom can be noisy at times. So, if you're looking for a relatively peaceful place to live, Duncan is worth considering.

As is often the case in a small city, Duncan doesn't have a public transportation system that people use for their commute.

The education level of Duncan citizens, measured as those with bachelor's degrees or advanced degrees, is similar to the national average for all American cities and towns. 19.54% of adults 25 and older in Duncan have a college degree.

The per capita income in Duncan in 2022 was $30,634, which is upper middle income relative to Oklahoma, and middle income relative to the rest of the US. This equates to an annual income of $122,536 for a family of four. However, Duncan contains both very wealthy and poor people as well.

Duncan is a very ethnically-diverse city. The people who call Duncan home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Duncan residents report their race to be White, followed by Native American. Duncan also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 11.09% of the city’s residents. Important ancestries of people in Duncan include Irish, English, German, Scottish, and Dutch.

The most common language spoken in Duncan is English. Other important languages spoken here include Spanish and Slavic languages.


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