
Kirby
- County:
- Pike County
- County Seat:
- No
- Area (mi²):
- 14.477
- State:
- Arkansas
Kirby is a CDP located in Pike County, Arkansas. Kirby has a 2025 population of 610. Kirby is currently declining at a rate of -1.93% annually and its population has decreased by -14.08% since the most recent census, which recorded a population of 710 in 2020.
The average household income in Kirby is $76,942 with a poverty rate of 11.17%. The median age in Kirby is 47.2 years: 48.3 years for males, and 46.2 years for females.