Allendale is located in Massachusetts. Allendale, Massachusetts has a population of 21,644.
The median household income in Allendale, Massachusetts is $46,871. The median household income for the surrounding county is $55,190 compared to the national median of $57,652. The median age of people living in Allendale is 43.5 years.
The average high temperature in July is 78.6 degrees, with an average low temperature in January of 11.6 degrees. The average rainfall is approximately 46.8 inches per year, with 62.1 inches of snow per year.