This information regarding towns and/or villages in Illinois is from the following source: Illinois Libraries, Vol. 50, No, 4 Springfield, Illinois April-May-June 1968 "A List of Illinois Place Names." [So far as I know this is "The Authority" on Illinois place names.] Brimfield (Peoria Co.) PO est. (changed from Charleston) 3/30/1843; active. Incorporated as a village 3/2/1843. CB&Q Pop. (1960) 656. [Note: Brimfield no longer has rail service. Parts of the abandoned railroad right-of-way have been assimilated back into adjacent farms.]