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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.

It is a fairly quiet city because there are relatively few of those groups of people who have a tendency to be noisy. (Children, for example, often can't help themselves from being noisy, and being parents ourselves, we know!) Duncan has relatively few families with children living at home, and is quieter because of it. Renters and college students, for their own reasons, can also be noisy. Duncan has few renters and college students. But the biggest reason it is quieter in Duncan than in most places in America, is that there are just simply fewer people living here. If you think trees make good neighbors, Duncan may be for you.

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

The percentage of adults in Duncan who are college-educated is close to the national average for all communities of 21.84%: 19.54% of the adults in Duncan have a bachelor's degree or advanced 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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