There are 2 Post Offices in Duncan, Oklahoma, serving a population of 22,998 people in an area of 43 square miles. There is 1 Post Office per 11,499 people, and 1 Post Office per 21 square miles.
In Oklahoma, Duncan is ranked 530th of 815 cities in Post Offices per capita, and 533rd of 815 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Duncan Post Offices.
Post Offices 802 West Willow Avenue Duncan, OK
United States Postal Service 802 West Willow Avenue Floor 100 Duncan, OK Mailing Service, Postal Services