--- title: "US port code 3908: Davenport, IA-Rock Island, Illinois · Adhoc" description: "3908 is the US port of exit code for Davenport, IA-Rock Island, Illinois on Canadian customs declarations." canonical: "https://www.adhocs.ca/us-ports-of-exit/3908" last_updated: 2026-07-27 --- # 3908 Davenport, IA-Rock Island, Illinois US port of exit US port of exit · Port of entry 3908 is the US code for the port of Davenport, IA-Rock Island, Illinois. A Canadian declaration uses it when goods left the United States through Davenport. - **Port code:** 3908 - **Port:** Davenport, IA-Rock Island - **State:** [Illinois](https://www.adhocs.ca/us-ports-of-exit/illinois) - **CBP district:** Chicago, IL - **Kind:** Port of entry ## Other US ports in Illinois - [3901](https://www.adhocs.ca/us-ports-of-exit/3901) Chicago (Port of entry) - [3902](https://www.adhocs.ca/us-ports-of-exit/3902) Peoria (Port of entry) - [3909](https://www.adhocs.ca/us-ports-of-exit/3909) Rockford Airport (Airport) - [3910](https://www.adhocs.ca/us-ports-of-exit/3910) Chicago Midway Int'l Airport (Airport) - [3971](https://www.adhocs.ca/us-ports-of-exit/3971) TNT Express Consignment, Chicago (Courier facility) - [3983](https://www.adhocs.ca/us-ports-of-exit/3983) Chicago Executive Airport (Airport) - [3987](https://www.adhocs.ca/us-ports-of-exit/3987) UFA UI Willard Airport, Savoy (Airport) - [4581](https://www.adhocs.ca/us-ports-of-exit/4581) Midamerican Airport (Airport) ## 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. - **Courier shipments.** Low-value courier shipments name 1001, New York, as the US port of exit. Also in this directory: [CBSA offices](https://www.adhocs.ca/cbsa-offices) · [Warehouse codes](https://www.adhocs.ca/cbsa-warehouses) · [Border crossings](https://www.adhocs.ca/border-crossings) ## Questions ### What is US port code 3908? The code for the port of Davenport, IA-Rock Island, Illinois. On a Canadian declaration, it says the goods left the United States through it. ## Sources - [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 Adhoc is not affiliated with CBSA or CBP.