Oklahoma is a U.S state situated in the South Central region of the United States. Oklahoma City is the capital and largest city of Oklahoma. Sooner State is the nickname of Oklahoma. Oklahoma Zip Code started with the digit 7300. The total number of Oklahoma Zip Code approximately 763. The total population of Oklahoma about 3,980,783. So you can find any information about Oklahoma especially zip codes, area codes, Populations, cities, county and so on.