While New York County, also known as Manhattan, topped the list of counties in 2013 ranked by average wages and salaries with $96,941, the richest county in the country during filing year 2013 in terms of average adjusted gross income was Teton County, Wyo.

In that Wyoming county, the average AGI reported was $296,778, according to an analysis by Syracuse University’s Transactional Records Access Clearinghouse.

TRAC also looked at the bottom end of the income scale, and found that Gooding County, Idaho, had the lowest average AGI of $15,379 in 2013. Meanwhile, Catron County, N.M., ranked at the bottom in terms of salary and wages, with average wages of only $16,280.

Adams County in Washington State had the greatest average number of exemptions claimed per federal income tax return in 2013, with an average of 2.77 exemptions, followed by Shannon County, S.D., with 2.65 exemptions.

On average, residents of New York County (Manhattan) claimed the fewest exemptions per return (1.55), followed by Washington, D.C. (1.58).

The complete report is available at http://trac.syr.edu/tracirs/latest/383/.