Most Expensive counties in USA - America's Richest Counties

County	state	Time Zone
Nassau (Nassau county NY Zip Codes)	NY	Eastern
Douglas (Douglas county CO Zip Codes)	CO	Central
Fairfax (Fairfax county VA Zip Codes)	VA	Eastern
Santa Clara (Santa-Clara county CA Zip Codes)	CA	Pacific
Montgomery (Montgomery county MD Zip Codes)	MD	Eastern
Somerset (Somerset county NJ Zip Codes)	NJ	Eastern
Putnam (Putnam county NY Zip Codes)	NY	Eastern
Montgomery (Montgomery county MD Zip Codes)	MD	Central
Morris (Morris county NJ Zip Codes)	NJ	Eastern
Calvert (Calvert county MD Zip Codes)	MD	Eastern
Williamson (Williamson county TN Zip Codes)	TN	Central
Morris (Morris county NJ Zip Codes)	NJ	Central
Charles (Charles county MD Zip Codes)	MD	Eastern
Putnam (Putnam county NY Zip Codes)	NY	Central
Arlington (Arlington county VA Zip Codes)	VA	Eastern
Hunterdon (Hunterdon county NJ Zip Codes)	NJ	Eastern
Douglas (Douglas county CO Zip Codes)	CO	Pacific
Alexandria City (Alexandria-City county VA Zip Codes)	VA	Eastern
Douglas (Douglas county CO Zip Codes)	CO	Mountain
Prince William (Prince-William county VA Zip Codes)	VA	Eastern
Loudoun (Loudoun county VA Zip Codes)	VA	Eastern
Howard (Howard county MD Zip Codes)	MD	Central
Howard (Howard county MD Zip Codes)	MD	Eastern
Forsyth (Forsyth county GA Zip Codes)	GA	Eastern
Marin (Marin county CA Zip Codes)	CA	Pacific
Douglas (Douglas county CO Zip Codes)	CO	Eastern
Stafford (Stafford county VA Zip Codes)	VA	Eastern
Stafford (Stafford county VA Zip Codes)	VA	Central