ZIP Code 21555

  • Zip Code: 21555
  • Type: Standard
  • Official USPS city name: Oldtown
  • Official USPS State Code: MD
  • Official State Name: Maryland
  • ZCTA: TRUE
  • Population: 1586.0
  • Density: 5.8
  • Primary Official County Code: 24001
  • Primary Official County Name: Allegany
  • Official County Name: Allegany
  • Official County Code: 24001
  • Imprecise: FALSE
  • Military: FALSE
  • Timezone: America/New_York (13:56 PM Wednesday, April 02 2025-04-02 (GMT -0400))
  • Geo Point: 39.58935, -78.55658


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