Interstate segment boardings are assigned to the state of origin. BC and ON are included on the map as there was reported ferry traffic destined to a U.S. terminal from these Canadian provinces. A state’s data is suppressed when all reporting operators in the state chose for their data to not be disclosed to the public. States with no data have no ferry operations. (*) Arizona has 1 ferry operation, which submitted their 2016 NCFO, but did not report boarding counts.
U.S. Department of Transportation, Bureau of Transportation Statistics, National Census of Ferry Operators 2016, Appendix A, Table 1, available at emedjimurje.info as of October 2017.