Carroll County, Maryland ZIP Codes

9 ZIP Codes

Zip Code
City
Population ↓
21784Sykesville39,258
21157Westminster38,984
21158Westminster22,083
21074Hampstead14,777
21102Manchester12,162
21787Taneytown11,645
21048Finksburg10,481
21776New Windsor6,261
21757Keymar2,671

Overview of ZIP Codes in Carroll 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.
9
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 9 ZCTAs in Carroll County, Maryland (US Census).

Sources

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

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