Henderson, NC. Sponsored Topics. Henderson, with a population of 16,095 at the 2000 census, is the county seat of Vance County, North Carolina, United States. The city was named in honor of former North Carolina Supreme Court Chief Justice Leonard Henderson, who lived nearby and was a friend of early settler Lewis Reavis.
Duncan is a city and county seat of Stephens County, Oklahoma, United States. The population was 23,431 at the 2010 census. The Chisholm Trail Crossing through Duncan's US-81
Zip code 73533 is primarily located in Stephens County. The official US Postal Service name for 73533 is DUNCAN, Oklahoma. Portions of zip code 73533 are contained within or border the city limits of Duncan, OK, Central High, OK, Empire City, OK, Bray, OK, Meridian, OK, Velma, OK, and Marlow, OK. The area code for zip code 73533 is 580.