Notes:

The data include both government and non-government shipments by vessel into and out of U.S. foreign trade zones, the 50 states, District of Columbia, and Puerto Rico.

Description: 

Containerized cargo has grown rapidly in recent years and is concentrated at a few large water ports.  The Ports of Los Angeles and Long Beach together handle 34.2 percent of all container traffic at water ports in the United States.  Container trade at these two ports increased by nearly 68 percent between 2000 and 2015 while container trade for the entire United States grew by 77 percent.

Source:

U.S. Department of Transportation, Maritime Administration, U.S. Waterborne Container Trade by U.S. Custom Ports, available at www.marad.dot.gov/resources/data-statistics/ as of June 2015.