
St Johnsville
- County:
- Montgomery County
- County Seat:
- No
- Area (mi²):
- 16.842
- State:
- New York
St. Johnsville town is located in Montgomery County, New York. St. Johnsville town has a 2025 population of 2,560. St. Johnsville town is currently declining at a rate of -0.08% annually and its population has decreased by -0.85% since the most recent census, which recorded a population of 2,582 in 2020.
The average household income in St. Johnsville town is $66,514 with a poverty rate of 20.66%. The median age in St. Johnsville town is 38.9 years: 37.7 years for males, and 40.7 years for females.