Delphos is a city located in Ottawa County Kansas. With a 2020 population of 320, it is the 344th largest city in Kansas and the 15080th largest city in the United States . Delphos is currently declining at a rate of -1.54% annually and its population has decreased by -10.86% since the most recent census, which recorded a population of 359 in 2010. Delphos reached it's highest population of 361 in 2010. Spanning over 1 miles, Delphos has a population density of 540 people per square mile.
The average household income in Delphos is $54,578 with a poverty rate of 11.86%. The median rental costs in recent years comes to $792 per month, and the median house value is $44,600. The median age in Delphos is 47.4 years, 41.6 years for males, and 55 years for females.