From a total population of 20,682, Gardner has a median age of 40. The average age of males, in Gardner, is 38 while the average age of females is 41.9. When you compare this to median age of Massachusetts, Gardner is 0.7 years older.
The median income of individuals, in Gardner, is $23,325 while the average household income is $46,589. When comparing the median income of people living in Gardner to the rest of Massachusetts, the average income in Gardner is $13,116 less.