Customs clearance at the Port of Houston

Houston files under CBP port code 5301, and it is the port where the name on your bill of lading tells you the least. The Houston Ship Channel has more than two hundred private terminals and eight public ones. Only the public ones handle containers. Everything else is petrochemical, crude, refined product, bulk and breakbulk moving at docks the port authority does not operate.

CBP port code: 5301
CBP district: 53
Official CBP name: Houston, Texas

The gap between the two numbers is the whole story

Port Houston's own public terminals handled about 54 million short tons in 2025. Tonnage across the Houston Ship Channel as a whole is several times that. That gap is not an accounting quirk, it is the private industrial complex that most people are not picturing when they say Port of Houston.

Houston ranks first among US ports in foreign waterborne tonnage and fifth in container volume. Both are true at once, and the superlative belongs to liquids rather than boxes. A great deal of confident writing about Houston gets this backwards.

What that means for your shipment specifically

If your bill of lading says Houston, the first question is which facility. Barbours Cut and Bayport are the container terminals and behave like container terminals. A private liquid or breakbulk dock has its own operator, its own free time and no relationship to Bayport's gate at all.

That decides where an examination would happen, which partner agencies are involved, and what your actual demurrage exposure is. It is the first thing we ask about a Houston shipment and it is not a formality.

Access here is stricter than most importers expect

Truck access to the Port Houston container terminals requires a TWIC card for secure areas, a motor carrier with a UIIA-approved SCAC, a plate registered in the port's system, and a booked appointment through the port's trucker portal.

If your trucker is not already set up, that is not a same-day fix, and it is a common reason a container that cleared customs on time still sits. Confirm your drayage provider is registered before the vessel arrives rather than on the day.

A dwell fee that is not demurrage

Port Houston assesses a sustained import dwell fee on containers that sit well past their free time, charged to the cargo owner and separate from the carrier's demurrage. Importers who budget only for demurrage meet this one as a surprise.

Check the current rate in the port's tariff before you rely on any figure you read anywhere, including here: these fees are revised, and a stale number is worse than no number.

Services

FAQ

What is the CBP port code for Houston?

5301.

Is Houston the biggest port in the United States?

It depends entirely on what you are counting, and this is the most common mistake made about it. Houston ranks first among US ports in foreign waterborne tonnage and fifth in containers. The superlative belongs to liquid bulk, not to boxes.

My bill of lading says Houston. Which terminal is that?

It may not be a container terminal at all. Barbours Cut and Bayport are the public container facilities; the ship channel also has more than two hundred private terminals handling liquids, bulk and breakbulk. The answer changes your free time, your exam location and your agency requirements, so it is the first thing we check.

Why can my trucker not collect my container?

Most often because they are not registered for port access. Houston requires a TWIC for secure areas, a UIIA-approved SCAC, a registered plate and a booked appointment. None of that is arranged on the day, and a cleared container with an unregistered trucker still sits.

Do you file at Houston from Florida and Puerto Rico?

Yes, under filer code EWV. The national permit lets a licensed customs broker conduct customs business in any district and entries move through ACE. What matters at Houston is knowing which of its terminals you are actually on.

Which Houston terminal is it?

Container terminal or private dock changes almost everything about your shipment. Send the bill of lading and we will tell you what you are actually dealing with.

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