srezaei: I keep a similar map of the states of MD, PA, NJ, DE, and the District of Columbia. All I have in my JMP data table are two columns...the county name following this convention in each row: (Name) County, State (I use the abbreviation). Then a second column with my variable of interest. Just drag the column containing the names into the map shape drop zone, the variable of interest into the Graphing Zone and you should be all set. If you don't have data for some of the counties, they will appear as blanks in the Graphing Zone...just right click in the graphing zone, and select: Map Shapes -> Show Missing Shapes if you want to include the outlines of the missing data counties.