I found this PDF on the web which lists the all the identified "Patriot" groups of 2003, here is what the intro says:
The Intelligence Project identified 171 “Patriot” groups that were active in 2003. Of these groups, 45 were militias and the remainder include “common-law” courts, publishers, ministries and citizens’ groups. Generally, Patriot groups define themselves as opposed to the “New World Order” or advocate or adhere to extreme antigovernment doctrines. Listing here does not imply that the groups themselves advocate or engage in violence or
other criminal activities, or are racist. The list was compiled from field reports, Patriot publications, the Internet, law enforcement sources and news reports.
Groups are identified by the city, county or region where they are located. Within states, groups are listed alphabetically by place of origin.
They then go on to list them all by state,
here.