Using 4681 on entry documents
CBPโs list of valid ACE port codes (Appendix E, revised 2026-02-03) gives Morristown Airport, Morristown, NJ as port 4681. The Census Bureauโs trade-statistics edition of Schedule D does not include 4681; it numbers the same airport 1081, a code CBPโs list does not include.
Port code 4681 identifies Morristown Airport, Morristown, NJ as the port of entry on CBP Form 7501, the entry summary a broker files for every formal entry. The same four digits identify the port in ACE entry filings, in AMS manifest data and in the Importer Security Filing (ISF), which must be on file before ocean cargo loads for the United States.
The first two digits are the customs district: 4681 belongs to district 46, and every port of entry in that district starts with the same two digits.
The code is for customs, not carriers. Carriers, forwarders and NVOCCs book and manifest against the UN/LOCODE for the place, and the bill of lading shows that five-character code, not the Schedule D code. Many Schedule D ports of entry โ airports, land border crossings, user-fee airports and inland ports โ have no UN/LOCODE seaport entry at all, and this site does not hold a UN/LOCODE page for Morristown Airport, Morristown, NJ; the UN/LOCODE finder searches the full code list, and the airport code finder has the IATA and ICAO codes.
CBP adds and retires codes as ports of entry open, merge or close, so confirm 4681 against the current CBP publication before filing. Airlift USA does not hold a U.S. customs broker license; entries on cargo we move are filed through our licensed broker network.