Kirwin
- County:
- Phillips County
- County Seat:
- No
- Area (mi²):
- 0.915
- State:
- Kansas
Kirwin is a city located in Phillips County, Kansas. Kirwin has a 2026 population of 129. Kirwin is currently declining at a rate of -0.77% annually and its population has decreased by -4.44% since the most recent census, which recorded a population of 135 in 2020.