Frankfort is a city located in Marshall County Kansas. With a 2020 population of 695, it is the 240th largest city in Kansas and the 11917th largest city in the United States . Frankfort is currently declining at a rate of 0.00% annually and its population has decreased by -4.27% since the most recent census, which recorded a population of 726 in 2010. Frankfort reached it's highest population of 725 in 2010. Spanning over 1 miles, Frankfort has a population density of 690 people per square mile.
The average household income in Frankfort is $62,496 with a poverty rate of 8.98%. The median rental costs in recent years comes to $625 per month, and the median house value is $70,900. The median age in Frankfort is 51 years, 41.4 years for males, and 55.3 years for females.