Schedule K


Schedule K is a geographic coding scheme originally developed by the United States Maritime Administration and currently maintained by the United States [Army Corps of Engineers] to identify seaports handling waterborne shipments involved with foreign trade of the United States. The codes consist of five numeric digits and are primarily for electronic communications concerning U.S. Customs.
Code lists are maintained and published by the Waterborne Commerce Statistics Center division of the United States Army Corps of Engineers.
Each country's ports share a common three digit prefix which is unique per country. For example all ports in Denmark begin with 409, while the United Kingdom prefix is 412.
The system is organized such that the first digit roughly corresponds to a broad geographic region:
First DigitRegionExample Code
0Canada 01822
1Canada, Greenland12493
2Central America and Caribbean23944
3South America35177
4Europe47507
5Asia50801
6Oceania60267
7Africa72901
9US Territories and Foreign Military Bases93501