Port code lookup: Schedule D and Schedule K

Which list a field wants

Four code lists turn up on the same shipment, and they are not interchangeable.

CBP’s ocean manifest guide carries Schedule K as its Appendix F. Schedule D is the Census Bureau’s list of US customs districts and ports.

Foreign port codes (Schedule K)

CBP’s list is too long to print. The search above holds 3,524 port names sharing 1,904 codes, and fifty major ports are below.

What goes wrong

• A UN/LOCODE in a Schedule K field. CNSHA and 57035 are the same port in two different lists. Booking systems speak the first; the CBP manifest wants the second.
• The seaport code for an airport, or the reverse. Schedule D lists them separately. Los Angeles is 2704 and Los Angeles International Airport is 2720. Miami is 5201 and Miami International Airport is 5206.
• The catch-all code when the port has its own. Search the port by name before you fall back on “All Other”.
• A code that has since been corrected. CBP’s own table of changes records them: Map Ta Phut in Thailand is 54903 and was printed as 59403, and Port Purcell in the British Virgin Islands is 24815 and was 91151.

Questions people ask

What is a Schedule D code?

A four-digit code for a US customs port. The first two digits are the customs district and the last two are the port within it, so 1703 is Savannah, GA in district 17. The Census Bureau publishes the list.

What is a Schedule K code?

A five-digit code for a foreign port. The US Army Corps of Engineers maintains the main list, and CBP publishes it as Appendix F of its ocean manifest guide. 57035 is Shanghai and 42157 is Rotterdam.

Is a Schedule K code the same as a UN/LOCODE?

No. A Schedule K code is five digits and comes from the US government. A UN/LOCODE is five characters, a two-letter country code followed by three more, and comes from the United Nations. Shanghai is 57035 in Schedule K and CNSHA as a UN/LOCODE. A field that wants one will not accept the other.

Why do several ports share one code?

Schedule K gives most countries an “All Other Ports” code, and CBP’s list prints smaller ports against it. In Albania, Shengjin and Vlore both carry 48100, the code for all other Albania ports, while Durres has its own, 48109.

How current are these lists?

The US list on this page was produced by the Census Bureau in April 2025. The foreign list is CBP’s August 2024 edition of Appendix F. Both change, so check a code you have not used before against the source linked at the bottom of this page.