
Rosalia
- County:
- Butler County
- County Seat:
- No
- Area (mi²):
- 1.271
- State:
- Kansas
Rosalia is a CDP located in Butler County, Kansas. Rosalia has a 2025 population of 147. Rosalia is currently declining at a rate of -1.34% annually but its population has increased by 47% since the most recent census, which recorded a population of 100 in 2020.
The average household income in Rosalia is $162,944 with a poverty rate of 15.08%. The median age in Rosalia is 29.5 years: 28.8 years for males, and 29.5 years for females.