Here are the County Codes for previous Land Grants of Illinois Hope this helped someone............. County codes used in the Secretary of State Land Sales Archive. Use these codes to search by county or to translate values returned by a search into the corresponding county name. COUNTY CODES 001 Adams 035 Hardin 069 Morgan 002 Alexander 036 Henderson 070 Moultrie 003 Bond 037 Henry 071 Ogle 004 Boone 038 Iroquois 072 Peoria 005 Brown 039 Jackson 073 Perry 006 Bureau 040 Jasper 074 Piatt 007 Calhoun 041 Jefferson 075 Pike 008 Carroll 042 Jersey 076 Pope 009 Cass 043 Jo Daviess 077 Pulaski 010 Champaign 044 Johnson 078 Putnam 011 Christian 045 Kane 079 Randolph 012 Clark 046 Kankakee 080 Richland 013 Clay 047 Kendall 081 Rock Island 014 Clinton 048 Knox 082 St. Clair 015 Coles 049 Lake 083 Saline 016 Cook 050 La Salle 084 Sangamon 0l7 Crawford 051 Lawrence 085 Schuyler 018 Cumberland 052 Lee 086 Scott 019 De Kalb 053 Livingston 087 Shelby 020 De Witt 054 Logan 088 Stark 021 Douglas 055 McDonough 089 Stephenson 022 Du Page 056 McHenry 090 Tazewell 023 Edgar 057 McLean 091 Union 024 Edwards 058 Macon 092 Vermilion 025 Effingham 059 Macoupin 093 Wabash 026 Fayette 060 Madison 094 Warren 027 Ford 061 Marion 095 Washington 028 Franklin 062 Marshall 096 Wayne 029 Fulton 063 Mason 097 White 030 Gallatin 064 Massac 098 Whiteside 031 Greene 065 Menard 099 Will 032 Grundy 066 Mercer 100 Williamson 033 Hamilton 067 Monroe 101 Winnebago 034 Hancock 068 Montgomery 102 Woodford Good luck, Christine