Kansas, OK has a population of 820 and is the 16,441st largest city in the United States. The population density is 443 per sq mi which is 711% higher than the Oklahoma average and 389% higher than the national average. The median age in Kansas is 34 which is approximately 7% lower than the Oklahoma average of 36. In Kansas, 49% of the population over 15 years of age are married, 89% speak English and 1% speak Spanish. 53% of Kansas residents were born in Oklahoma, 45% were born out of state, 0% were born outside of the United States and 2% were foreign born.