Long Island is a city located in Phillips County, Kansas. Long Island has a 2026 population of 131. Long Island is currently declining at a rate of -2.24% annually and its population has decreased by -5.07% since the most recent census, which recorded a population of 138 in 2020.
The median household income in Long Island is $62,083 with a poverty rate of 2.21%. The median age in Long Island is 28.9 years: 36.8 years for males, and 27.8 years for females. For every 100 females there are 86.3 males.