From a total population of 22,658, New Plymouth has a median age of 38.2. The average age of males, in New Plymouth, is 36.2 while the average age of females is 39.7. When you compare this to median age of Idaho, New Plymouth is 3.0 years older.
The median income of individuals, in New Plymouth, is $20,332 while the average household income is $44,326. When comparing the median income of people living in New Plymouth to the rest of Idaho, the average income in New Plymouth is $2,755 less.