Humboldt, KS has a population of 1,700 and is the 11,982nd largest city in the United States. The population density is 1,187 per sq mi which is 3285% higher than the Kansas average and 1211% higher than the national average. The median age in Humboldt is 44 which is approximately 22% higher than the Kansas average of 36. In Humboldt, 59% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 76% of Humboldt residents were born in Kansas, 23% were born out of state, 1% were born outside of the United States and 0% were foreign born.