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WARREN COUNTY,
ILLINOIS
ZIP Code
Post Office
Date Established
Date Discontinued
61412
ALEXIS
01/22/1872
61417
BERWICK
10/19/1840
61423
CAMERON
04/13/1837
61435
GERLAW
61447
KIRKWOOD
61453
LITTLE YORK
02/15/1840
61462
MONMOUTH
61473
ROSEVILLE
03/02/1838
61478
SMITHSHIRE
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