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Post Offices by County

O'BRIEN COUNTY, IOWA

ZIP Code Post Office Date Established Date Discontinued
51231 ARCHER
51346 HARTLEY 03/03/1879
51046 PAULLINA
51245 PRIMGHAR 08/07/1873
51248 SANBORN 12/19/1878
51201 SHELDON
51058 SUTHERLAND

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