I nominate Sonoma County California as the pot hole capital of the USA. Since the economy turned South the roads have been sorely neglected. I took a short ride last Saturday and have to say it was not very enjoyable as my teeth rattled all the way.
Oklahoma has some really bad roads. Here in Tulsa they cheap out and use blacktop, when the ice comes around it just breaks that stuff up. After our blizzard this year it really took a toll on the streets and highways. There is road work constantly going on somewhere throughout the city.