Elmer
- County:
- Macon County
- County Seat:
- No
- Area (mi²):
- 0.253
- State:
- Missouri
Elmer is a city located in Macon County, Missouri. Elmer has a 2026 population of 51. Elmer is currently declining at a rate of -1.92% annually and its population has decreased by -1.92% since the most recent census, which recorded a population of 52 in 2020.