The third congressional district consists of Howard County. The district also includes the following parts of Anne Arundel County: election districts 2, 3, 5, and 6; election district 1, precincts 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, and 26; election district 4, precincts 14 and 15; that part of election district 1, precinct 23 that consists of census tract 7406.01, blocks 2000 through 2015, 2037, and 2038; that part of election district 4, precinct 2 that consists of the following: census tract 7403.03, block 2029; and census tract 7403.04, block 1003; that part of election district 4, precinct 4 that consists of the following: census tract 7408.00, blocks 1003 through 1005, 1007, 1008, 1011, 1013 through 1025, 1027, 1028, 2000 through 2006, 2014 through 2017, 2019, 2020, and 2022; and census tract 7517.00, blocks 1000 through 1011 and 1017 through 1019; that part of election district 4, precinct 7 that consists of the following: census tract 7403.05, block 1000; census tract 7406.01, blocks 2016 and 2017; census tract 7406.02, blocks 3000 and 3003; and census tract 7406.03, block 2001; that part of election district 4, precinct 13 that consists of the following: census tract 7408.00, blocks 1000 through 1002, 1009, 1010, 1012, and 1026; and census tract 7410.00, blocks 1000 through 1005, 1007, and 2014 through 2019; and that part of election district 4, precinct 26 that consists of census tract 7403.03, blocks 2027 and 2028. The district also includes the following parts of Carroll County: election district 13; election district 14, precincts 2 and 3; and that part of election district 14, precinct 1 that consists of census tract 5141.00, blocks 1010 through 1012.