Glenpool, OK has a population of 12,351 and is the 3,336th largest city in the United States. The population density is 1,123 per sq mi which is 1835% higher than the Oklahoma average and 1139% higher than the national average. The median age in Glenpool is 32 which is approximately 13% lower than the Oklahoma average of 36. In Glenpool, 59% of the population over 15 years of age are married, 92% speak English and 3% speak Spanish. 66% of Glenpool residents were born in Oklahoma, 29% were born out of state, 0% were born outside of the United States and 5% were foreign born.