Lost Springs is a city located in Marion County, Kansas. Lost Springs has a 2026 population of 56. Lost Springs is currently declining at a rate of 0% annually and its population has increased by 1.82% since the most recent census, which recorded a population of 55 in 2020.
The median household income in Lost Springs is $43,438 with a poverty rate of 0%. The median age in Lost Springs is 57.8 years: 53.6 years for males, and 58.5 years for females. For every 100 females there are 68.8 males.