Ulm
- County:
- Prairie County
- County Seat:
- No
- Area (mi²):
- 0.261
- State:
- Arkansas
Ulm is a town located in Prairie County, Arkansas. Ulm has a 2026 population of 178. Ulm is currently growing at a rate of 1.14% annually and its population has increased by 2.3% since the most recent census, which recorded a population of 174 in 2020.