Long Island
- County:
- Phillips County
- County Seat:
- No
- Area (mi²):
- 0.411
- State:
- Kansas
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.