Sector Upper Mississippi River's office is located in St. Louis, MO. Subject to the overriding provisions of Sec. 3.40-5, the boundaries of Sector Upper Mississippi River's Marine Inspection Zone and Captain of the Port Zone include all of Wyoming except for Sweetwater County; all of North Dakota, South Dakota, Nebraska, Colorado, Kansas, and Iowa; all of Missouri with the exception of Perry, Cape Girardeau, Scott, Mississippi, New Madrid, Dunklin, and Pemiscot Counties; that part of Minnesota south of latitude 46[deg]20[min]00[sec] N; that part of Wisconsin south of latitude 46[deg]20[min]00[sec] N, and west of longitude 90[deg]00[min]00[sec] W; that part of Illinois west of longitude 90[deg]00[min]00[sec] W and north of latitude 41[deg]00[min]00[sec] N; that part of Illinois south of latitude 41[deg]00[min]00[sec] N, except for Jackson, Williamson, Saline, Gellatin, Union, Johnson, Pope, Hardin, Alexander, Pulaski, and Massac Counties; that part of the Upper Mississippi River above mile 109.9, including both banks, and that part of the Illinois River below latitude 41[deg]00[min]00[sec] N. [USCG-2006-25556, 72 FR 36324, July 2, 2007, as amended by USCG-2013-0491, 80 FR 20163, Apr. 15, 2015]