From a total population of 135,872, Tazewell County has a median age of 40.4. The average age of males, in Tazewell County, is 39 while the average age of females is 41.7. When you compare this to median age of Illinois, Tazewell County is 3.4 years older.
The median income of individuals, in Tazewell County, is $28,953 while the average household income is $57,052. When comparing the median income of people living in Tazewell County to the rest of Illinois, the average income in Tazewell County is $1,066 less.