This is a Message Board Post that is gatewayed to this mailing list. Classification: Query Message Board URL: http://boards.ancestry.com/mbexec/msg/an/RgB.2ACE/242.3 Message Board Post: Loudon County was created in 1870 from Blount Roane and Monroe Counties. In 1848 Philadelphia was part of Monroe Co. To find when different areas in East TN had post offices and their counties check http://www.rootsweb.com/~tnmcmin2/EastTennesseePostOffices.html Good Hunting! Great info. Sharon