From a total population of 9,218, Fairfield has a median age of 42.3. The average age of males, in Fairfield, is 38.8 while the average age of females is 43.7. When you compare this to median age of Iowa, Fairfield is 4.3 years older.
The median income of individuals, in Fairfield, is $24,166 while the average household income is $39,044. When comparing the median income of people living in Fairfield to the rest of Iowa, the average income in Fairfield is $3,455 less.