From a total population of 20,947, Buchanan County has a median age of 38.8. The average age of males, in Buchanan County, is 38.1 while the average age of females is 39.6. When you compare this to median age of Iowa, Buchanan County is 0.8 years older.
The median income of individuals, in Buchanan County, is $28,193 while the average household income is $56,393. When comparing the median income of people living in Buchanan County to the rest of Iowa, the average income in Buchanan County is $572 more.