Fairfax County, VA, is literally the 2nd richest county in the US; the #1 richest county is right next door. Traffic is heavy, and housing costs keep goin up. Salaries are decent, esp. in the cleared government sector, though civilian gigs are pretty lucrative too.
Don't get me wrong, you'll probably have a decent lifestyle there -- I think about moving back occasionally -- but it's nothing like Omaha or Columbus.
Source: am from there, ran data centers in Reston, Herndon, and Ashburn.