What is the abbreviation standard that the U.S. Customs and Border Protection's travel history is following for the locations?

E.g. I see BOS = Boston; HOU = Houston; LOS = Los Angeles; SEA = Seattle; SFR = San Francisco.

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  • Your link doesn't seem to work. Aug 24, 2020 at 21:21
  • 1
    Are we supposed to fill out that form to see these abbreviations? Aug 24, 2020 at 21:26
  • @AzorAhai--hehim anyway, those of us who are US citizens can't get anything out of that form.
    – phoog
    Aug 24, 2020 at 21:39
  • @AzorAhai--hehim yes, unless they're listed somewhere else, which don't know. Aug 24, 2020 at 21:59

1 Answer 1


This is CBP's own system. I couldn't find a list on the CBP site, but they provide the list to the State Department, which includes it in the Foreign Affairs Manual at 9 FAM 102.5-3.


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