Blair, OK has a population of 812 and is the 16,506th largest city in the United States. The population density is 1,756 per sq mi which is 3117% higher than the Oklahoma average and 1838% higher than the national average. The median age in Blair is 34 which is approximately 6% lower than the Oklahoma average of 36. In Blair, 65% of the population over 15 years of age are married, 94% speak English and 6% speak Spanish. 64% of Blair residents were born in Oklahoma, 34% were born out of state, 0% were born outside of the United States and 2% were foreign born.