--- title: "US port code 1681: Myrtle Beach Intl Airport, South Carolina · Adhoc" description: "1681 is the US port of exit code for Myrtle Beach Intl Airport, South Carolina on Canadian customs declarations." canonical: "https://www.adhocs.ca/us-ports-of-exit/1681" last_updated: 2026-07-27 --- # 1681 Myrtle Beach Intl Airport, South Carolina US port of exit US port of exit · Airport 1681 is the US code for the port of Myrtle Beach Intl Airport, South Carolina. A Canadian declaration uses it when goods left the United States through Myrtle Beach Intl Airport. - **Port code:** 1681 - **Port:** Myrtle Beach Intl Airport - **State:** [South Carolina](https://www.adhocs.ca/us-ports-of-exit/south-carolina) - **CBP district:** Charleston, SC - **Kind:** Airport ## Other US ports in South Carolina - [1601](https://www.adhocs.ca/us-ports-of-exit/1601) Charleston (Port of entry) - [1602](https://www.adhocs.ca/us-ports-of-exit/1602) Georgetown (Port of entry) - [1603](https://www.adhocs.ca/us-ports-of-exit/1603) Greenville-Spartanbrg (Port of entry) - [1604](https://www.adhocs.ca/us-ports-of-exit/1604) Columbia (Port of entry) ## 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 1681? The code for the port of Myrtle Beach Intl Airport, South Carolina. 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.