--- title: "Cornwall–Massena border crossing codes: CBSA 0409, US port 0704 · Adhoc" description: "The Cornwall–Massena border crossing: CBSA office code 0409 on the Canadian side, US port of exit code 0704 on the US side." canonical: "https://www.adhocs.ca/border-crossings/cornwall-massena" last_updated: 2026-07-27 --- # Cornwall–Massena crossing codes Border crossing At Cornwall the CBSA office code is 0409. If the goods left the United States through Massena, New York, the US port code is 0704. - **Canada · CBSA office:** [0409](https://www.adhocs.ca/cbsa-offices/0409) Cornwall - **United States · US port of exit:** [0704](https://www.adhocs.ca/us-ports-of-exit/0704) Massena, New York - **Province:** [Ontario](https://www.adhocs.ca/cbsa-offices/ontario) ## Warehouses at 0409 1 active warehouse code reports to the Canadian side. Goods can wait in one until CBSA releases them. - [2744](https://www.adhocs.ca/cbsa-warehouses/2744) Link + Corp. Customs Brokerage, 435 Second Street West Cornwall K6J 1H4 (0409) ## Nearby crossings - [Trout River, about 35 km](https://www.adhocs.ca/border-crossings/trout-river): [0307](https://www.adhocs.ca/cbsa-offices/0307) Trout River ⇄ [0715](https://www.adhocs.ca/us-ports-of-exit/0715) Trout River, New York - [Prescott–Ogdensburg, about 70 km](https://www.adhocs.ca/border-crossings/prescott-ogdensburg): [0439](https://www.adhocs.ca/cbsa-offices/0439) Prescott ⇄ [0701](https://www.adhocs.ca/us-ports-of-exit/0701) Ogdensburg, New York - [Lacolle–Champlain, about 105 km](https://www.adhocs.ca/border-crossings/lacolle-champlain): [0351](https://www.adhocs.ca/cbsa-offices/0351) Lacolle ⇄ [0712](https://www.adhocs.ca/us-ports-of-exit/0712) Champlain-Rouses Point, New York ## Good to know - **Which US port.** CBSA defines it as the US port where the truck or train crosses into Canada, or the one nearest to where it crosses. For goods sent by ship or plane, it is the US port where they were loaded. Also in this directory: [CBSA offices](https://www.adhocs.ca/cbsa-offices) · [Warehouse codes](https://www.adhocs.ca/cbsa-warehouses) · [US ports of exit](https://www.adhocs.ca/us-ports-of-exit) ## Questions ### What is the CBSA office code for Cornwall? 0409, on the Canadian side of the Cornwall–Massena crossing. ### What is the US port code for Massena, New York? 0704, on the US side of the Cornwall–Massena crossing. ## Sources - [Directory of CBSA offices and services](https://www.cbsa-asfc.gc.ca/do-rb/menu-eng.html), Canada Border Services Agency - [Ports of entry](https://www.cbp.gov/contact/ports), U.S. Customs and Border Protection - [Memorandum D17-1-10, Coding of Customs Accounting Documents](https://www.cbsa-asfc.gc.ca/publications/dm-md/d17/d17-1-10-eng.html), Canada Border Services Agency - [Sub-location codes for customs sufferance warehouses](https://www.cbsa-asfc.gc.ca/import/codes/sw-ea-eng.html), Canada Border Services Agency, version of July 27, 2026 Which US port faces which CBSA office is matched by location; neither agency publishes it as a list. Adhoc is not affiliated with CBSA or CBP.