CBSA office · Land border crossing
0440Sarnia in Ontario
0440 is the CBSA office code for Sarnia, a land border crossing in Ontario. 3 active warehouse codes report to it.
- Office code
- 0440
- Type
- Land border crossing
- Province
- Ontario
- Warehouse codes
- 3 active
- Across the border
- 3802 Port Huron, MichiganSarnia–Port Huron
3 warehouse codes report to 0440
A warehouse’s sub-location code goes on a declaration with this office code.
US ports of exit near 0440
The land crossings nearest this office, each with the US port across from it. Distances are in a straight line, not by road.
Using 0440 on a declaration
- Enter 0440 as the CBSA office where the goods are released.
- If the goods wait in a sufferance or bonded warehouse, add its sub-location code next to the office code.
- If the goods were exported from the United States, add the US port they left through.
Good to know
Warehouse codes
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.
1001
Courier shipments. Low-value courier shipments name 1001, New York, as the US port of exit.
Other offices nearby
Questions
What is CBSA office 0440?
Sarnia: a land border crossing in Ontario. 0440 is its four-digit CBSA office code.
Which warehouses report to office 0440?
3, including Canadian National Railways, Cargill Limited, Shell Canada Products. They are all listed on this page.
Which US port is across from 0440?
3802 Port Huron, Michigan. Both codes are on the Sarnia–Port Huron crossing page.
Is 0440 a sub-location code?
No. 0440 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, Canada Border Services Agency; Sub-location codes for customs sufferance warehouses, Canada Border Services Agency, version of July 27, 2026; Ports of entry, U.S. Customs and Border Protection; Memorandum D17-1-10, Coding of Customs Accounting Documents, 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.
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