Maryland counties and county equivalents

These are current canonical geography records. Historical boundaries and election reporting units can differ; consult each area's caveats.

• Allegany County

  FIPS 24001

• Anne Arundel County

  FIPS 24003

• Baltimore city

  FIPS 24510

• Baltimore County

  FIPS 24005

• Calvert County

  FIPS 24009

• Caroline County

  FIPS 24011

• Carroll County

  FIPS 24013

• Cecil County

  FIPS 24015

• Charles County

  FIPS 24017

• Dorchester County

  FIPS 24019

• Frederick County

  FIPS 24021

• Garrett County

  FIPS 24023

• Harford County

  FIPS 24025

• Howard County

  FIPS 24027

• Kent County

  FIPS 24029

• Montgomery County

  FIPS 24031

• Prince George's County

  FIPS 24033

• Queen Anne's County

  FIPS 24035

• Somerset County

  FIPS 24039

• St. Mary's County

  FIPS 24037

• Talbot County

  FIPS 24041

• Washington County

  FIPS 24043

• Wicomico County

  FIPS 24045

• Worcester County

  FIPS 24047