--- title: "CBSA office 0409: Cornwall · Adhoc" description: "0409 is the CBSA office code for Cornwall, Ontario. 1 warehouse code reports to it. US port across: 0704 Massena, New York." canonical: "https://www.adhocs.ca/cbsa-offices/0409" last_updated: 2026-07-27 --- # 0409 Cornwall in Ontario CBSA office · Land border crossing 0409 is the CBSA office code for Cornwall, a land border crossing in Ontario. 1 active warehouse code reports to it. - **Office code:** 0409 - **Type:** Land border crossing - **Province:** [Ontario](https://www.adhocs.ca/cbsa-offices/ontario) - **Warehouse codes:** 1 active - **Across the border:** [0704](https://www.adhocs.ca/us-ports-of-exit/0704) Massena, New York; [Cornwall–Massena](https://www.adhocs.ca/border-crossings/cornwall-massena) ## 1 warehouse codes report to 0409 A warehouse’s sub-location code goes on a declaration with this office code. - [2744](https://www.adhocs.ca/cbsa-warehouses/2744) Link + Corp. Customs Brokerage, 435 Second Street West Cornwall K6J 1H4 ## US ports of exit near 0409 The land crossings nearest this office, each with the US port across from it. Distances are in a straight line, not by road. - [Cornwall–Massena](https://www.adhocs.ca/border-crossings/cornwall-massena): [0409](https://www.adhocs.ca/cbsa-offices/0409) Cornwall ⇄ [0704](https://www.adhocs.ca/us-ports-of-exit/0704) Massena, New York - [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 ## Using 0409 on a declaration 1. Enter 0409 as the CBSA office where the goods are released. 2. If the goods wait in a sufferance or bonded warehouse, add its sub-location code next to the office code. 3. If the goods were exported from the United States, add the US port they left through. ## Good to know - **Always with an office code.** A warehouse’s four-digit code only goes on a declaration together with the code of the CBSA office it reports to. - **Courier shipments.** Low-value courier shipments name 1001, New York, as the US port of exit. ## Other offices nearby - [0330](https://www.adhocs.ca/cbsa-offices/0330) Dundee (Land border crossing · about 18 km) - [0307](https://www.adhocs.ca/cbsa-offices/0307) Trout River (Land border crossing · about 35 km) - [0302](https://www.adhocs.ca/cbsa-offices/0302) Herdman (Land border crossing · about 45 km) - [0323](https://www.adhocs.ca/cbsa-offices/0323) Valleyfield (Inland office · about 55 km) - [0311](https://www.adhocs.ca/cbsa-offices/0311) Covey Hill (Land border crossing · about 70 km) Also in this directory: [Warehouse codes](https://www.adhocs.ca/cbsa-warehouses) · [US ports of exit](https://www.adhocs.ca/us-ports-of-exit) · [Border crossings](https://www.adhocs.ca/border-crossings) ## Questions ### What is CBSA office 0409? Cornwall: a land border crossing in Ontario. 0409 is its four-digit CBSA office code. ### Which warehouses report to office 0409? 1, including Link + Corp. Customs Brokerage. They are all listed on this page. ### Which US port is across from 0409? 0704 Massena, New York. Both codes are on the Cornwall–Massena crossing page. ### Is 0409 a sub-location code? No. 0409 is an office code. Sub-location codes are also four digits, but each names a warehouse and belongs to an office. ## Sources - [Directory of CBSA offices and services](https://www.cbsa-asfc.gc.ca/do-rb/menu-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 - [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 Office types and map positions are ours: the type is read from the office’s name, and each office is placed at its town. 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.