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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.

The city is relatively quiet, having a combination of lower population density and few of those groups of people who have a tendency to be noisy. For example, Duncan has relatively fewer families with younger children, and/or college students. Combined, this makes Duncan a pretty quiet place to live overall. If you like quiet, you will probably enjoy it here.

Duncan is a small city, and as such doesn't have a public transit system that people use to get to and from their jobs every day.

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 2018 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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