Eustis
- County:
- Frontier County
- County Seat:
- No
- Area (mi²):
- 0.423
- State:
- Nebraska
Eustis is a village located in Frontier County, Nebraska. Eustis has a 2026 population of 400. Eustis is currently declining at a rate of -1.72% annually but its population has increased by 2.3% since the most recent census, which recorded a population of 391 in 2020.