Fairfield
- County:
- Nelson County
- County Seat:
- No
- Area (mi²):
- 0.286
- State:
- Kentucky
Fairfield is a city located in Nelson County, Kentucky. Fairfield has a 2026 population of 135. Fairfield is currently growing at a rate of 3.85% annually and its population has increased by 12.5% since the most recent census, which recorded a population of 120 in 2020.
The median household income in Fairfield is $90,781 with a poverty rate of 2.06%. The median age in Fairfield is 59.8 years: 63.6 years for males, and 59.6 years for females. For every 100 females there are 47.0 males.