
Garnavillo
- County:
- Clayton County
- County Seat:
- No
- Area (mi²):
- 0.944
- State:
- Iowa
Garnavillo is a city located in Clayton County, Iowa. Garnavillo has a 2025 population of 747. Garnavillo is currently declining at a rate of -0.27% annually and its population has decreased by -1.19% since the most recent census, which recorded a population of 756 in 2020.
The average household income in Garnavillo is $85,210 with a poverty rate of 11.31%. The median age in Garnavillo is 38.8 years: 37.5 years for males, and 47.8 years for females.