ZIP Code 21757

  • Zip Code: 21757
  • Type: Standard
  • Official USPS city name: Keymar
  • Official USPS State Code: MD
  • Official State Name: Maryland
  • ZCTA: TRUE
  • Population: 2793.0
  • Density: 28.6
  • Primary Official County Code: 24021
  • Primary Official County Name: Frederick
  • Official County Name: Frederick| Carroll
  • Official County Code: 24021| 24013
  • Imprecise: FALSE
  • Military: FALSE
  • Timezone: America/New_York (08:52 AM Friday, March 14 2025-03-14 (GMT -0400))
  • Geo Point: 39.59986, -77.25679


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