Lake Quivira, KS has a population of 987 and is the 15,256th largest city in the United States. The population density is 707 per sq mi which is 1916% higher than the Kansas average and 681% higher than the national average. The median age in Lake Quivira is 49 which is approximately 36% higher than the Kansas average of 36. In Lake Quivira, 76% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 41% of Lake Quivira residents were born in Kansas, 57% were born out of state, 1% were born outside of the United States and 2% were foreign born.