Howard County, Maryland ZIP Codes

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ZIP Codes in Howard County with Associated Cities & Towns

Howard County, MD - Standard ZIP Codes
20701 | 20723 | 20759 | 20763 | 20777 | 20794 | 20833 | 21029 | 21036 | 21042 | 21043 | 21044 | 21045 | 21046 | 21075 | 21076 | 21104 | 21163 | 21723 | 21737 | 21738 | 21771 | 21784 | 21794 | 21797
Howard County, MD - PO Box ZIP Codes (NO DEMOGRAPHIC DATA)
21041 | 21150 | 21765
Howard County, MD - Unique - Single Entity ZIP Codes (NO DEMOGRAPHIC DATA)
20588
Note: Every ZIP Code has a single ACTUAL City Name assigned by the US Postal Service (USPS).
See the specific ZIP Code for acceptable Alternate City Names and spelling variations.

ZIP Codes in Howard County Address Data

  • Businesses Addresses: 13,523
  • PO Box Addresses: 5,065
  • Residential Addresses: 156,356
    • Multi-Family Addresses: 24,411
    • Single Family Addresses: 131,184

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Map of Howard County, MD ZIP Codes With Actual (Default) City Names

Annapolis Junction
Clarksville
Columbia
Cooksville
Dayton
DHS
Elkridge
Ellicott City
Fulton
Glenelg
Glenwood
Highland
Jessup
Laurel
Lisbon
Savage
Simpsonville
West Friendship
Woodbine
Woodstock


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