Hollister, OK has a population of 20 and is the 28,771st largest city in the United States. The population density is 82 per sq mi which is 50% higher than the Oklahoma average and 10% lower than the national average. The median age in Hollister is 52 which is approximately 44% higher than the Oklahoma average of 36. In Hollister, 83% of the population over 15 years of age are married, 85% speak English and 15% speak Spanish. 25% of Hollister residents were born in Oklahoma, 75% were born out of state, 0% were born outside of the United States and 0% were foreign born.