Guymon, OK has a population of 11,934 and is the 3,432nd largest city in the United States. The population density is 1,552 per sq mi which is 2744% higher than the Oklahoma average and 1613% higher than the national average. The median age in Guymon is 31 which is approximately 15% lower than the Oklahoma average of 36. In Guymon, 61% of the population over 15 years of age are married, 56% speak English and 40% speak Spanish. 40% of Guymon residents were born in Oklahoma, 32% were born out of state, 1% were born outside of the United States and 27% were foreign born.