Allen County, Ohio ZIP Codes

13 ZIP Codes

Zip Code
City
Population ↓
45805Lima24,387
45801Lima21,739
45804Lima13,608
45807Lima11,774
45806Lima10,974
45833Delphos10,919
45817Bluffton5,926
45887Spencerville4,422
45850Harrod3,559
45820Cairo581
45808Beaverdam350
45854Lafayette293
45809Gomer45

Overview of ZIP Codes in Allen County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
13
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 13 ZCTAs in Allen County, Ohio (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

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