Harlan
- County:
- Smith County
- County Seat:
- No
- Area (mi²):
- 35.904
- State:
- Kansas
Harlan is located in Smith County, Kansas. Harlan has a 2025 population of 72 . Harlan is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 72 in 2020.
The median age in Harlan is 5.9 years: 5.4 years for males, and 18 years for females. For every 100 females there are 95.8 males.