CBP port code · Seaport
Chicago, IL port code: 3901
The CBP port code for Chicago, IL is 3901; it is in the Chicago, IL customs district (district code 39).
- Port code
- 3901
- District
- 39
- State
- Illinois
- UN/LOCODE
- USCHI
Port details
About port code 3901
| Port code | 3901 |
|---|---|
| Port of entry | Chicago, IL |
| As listed | CHICAGO, IL |
| Customs district | Chicago, IL (39) |
| State | Illinois (IL) |
| Type | Seaport |
| UN/LOCODE | USCHI (Chicago): Seaport, Airport |
| UN/LOCODE | USORD (O'Hare Apt/Chicago): Airport |
| On CBP's list | Yes, ACE Appendix E (revised 3 February 2026) |
Where the code goes
Where port code 3901 is used
The four-digit code identifies the port on US import paperwork. Your customs broker usually enters it, but importers and exporters see it on the documents.
CBP Form 7501
The entry summary takes Schedule D codes in the port code box (where the entry is filed) and in box 20, the U.S. port of unlading.
Carrier manifest
CBP publishes its port code list for import manifests filed in ACE. The carrier's manifest names the US port of unlading by this code.
ISF for ocean cargo
The importer, or its agent, files the Importer Security Filing at least 24 hours before the container is loaded abroad. CBP matches it to the manifest by bill of lading.
Shipping from India
Indian ports for containers to Chicago, IL
India's main container gateways. The right one depends on where the cargo is made and the carrier's routing; ask us for options to Chicago, IL.
Questions
Port code 3901: FAQs
What is the port code for Chicago, IL?
The CBP port code for Chicago, IL is 3901. It is in the Chicago, IL customs district (district code 39).
Where is port code 3901 used?
On CBP Form 7501, the entry summary, four-digit Schedule D codes go in the port code box (the port where the entry is filed) and in box 20, the U.S. port of unlading. Carriers use the same codes for the port of unlading on their import manifests. Your customs broker normally fills these in.
Which customs district is Chicago, IL in?
The first two digits of a Schedule D code are its district, so 3901 is in the Chicago, IL customs district (district code 39). This list has 8 other ports of entry in that district.
Is 3901 the same as the UN/LOCODE for Chicago?
No. 3901 is the US customs code. USCHI and USORD are the UN/LOCODEs, the international location code carriers use on bookings and bills of lading. Give the carrier the UN/LOCODE and your customs broker the Schedule D code.
How do I ship a container from India to Chicago?
Send Atmavaan the cargo, the container type and where it is made in India. We quote ocean freight from the main Indian container ports, such as Nhava Sheva, Mundra and Chennai, book the sailing, and can file the ISF and arrange US customs clearance at Chicago.
How current is this port code?
This page uses the Census Bureau's Schedule D district and port list (April 2025 edition), checked against CBP's ACE Appendix E port code list revised 3 February 2026. CBP opens, closes and renumbers ports from time to time, so confirm the code with your customs broker before filing.
Source: Census Bureau Schedule D district and port list (April 2025), checked against CBP's ACE Appendix E port codes (revised 3 February 2026); UN/LOCODE links from the UNECE code list. Public-domain US government data. Confirm codes with your customs broker before filing.
Other ports in Chicago, IL (39)
Shipping from India to Chicago, IL?
Send the cargo and where it is made. A named Atmavaan specialist replies with a rate and the routing.
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