Ainsworth
- County:
- Brown County
- County Seat:
- Yes
- Area (mi²):
- 1.004
- State:
- Nebraska
Ainsworth is a city located in Brown County, Nebraska. Ainsworth has a 2026 population of 1,605. It is also the county seat of Brown County. Ainsworth is currently declining at a rate of -0.06% annually and its population has decreased by -0.93% since the most recent census, which recorded a population of 1,620 in 2020.