Genealogy and Historical Societies often have a wealth of information. Many provide these services free while others charge a minimal amount. When asking for help, please don’t ask them to search for every Surname you are researching.
- Illinois State Genealogical Society
- BIGWILL Genealogists
- Cary-Grove Historical Society
- Computer Assisted Genealogy Group
- Computer-Assisted Genealogy Group of Northern Illinois
- Crystal Lake Historical Society
- Czech & Slovak American Genealogy Society of Illinois.
- Elgin Genealogical Society
Genealogical & Historical Societies of Illinois
- Genealogy Society of Southern Illinois (GSSI)
- Huguenot Society of Illinois
- Illiana Jewish Genealogical Society
- Illinois Daughters of the American Revolution
- Illinois Heritage Association
- Iroquois County Genealogy Society
- Jewish Genealogical Society of Illinois
- Kane County Genealogical Society
- Northwest Suburban Council of Genealogists
- Polish Genealogical Society of America
- SAGA-OMII Genealogical Association
- South Suburban Genealogical and Historical Society
- The Burlington Route Historical Society
- Tri-State Genealogical Society – Indiana, Illinois and Kentucky
County Specific Societies
Adams County
Bond County
Boone County
Brown County
Bureau County
Calhoun County
Carroll County
Cass County
Champaign County
Christian County
Clark County
- Clark County Genealogical Society, 309 Maple Street, P.O. Box 153, Marshall, IL 62441
- Clark County Historical Society
Clay County
Clinton County
- Clinton County Historical Society, 1091 Franklin St, Carlyle IL 62231; 618-594-4015
- Clinton County Historical Society Facebook Page
Coles County
Cook County
- Chicago and North Western Historical Society
- Chicago Historical Society, Chicago
- Des Plaines History Center, 789 Pearson Street, Des Plaines, IL 60016
- Evanston History Center, Evanston
- Schaumburg Genealogical Society
- Sons of the American Revolution, Fort Dearborn-Chicago Chapter
- South Suburban Genealogical & Historical Society, South Holland
- Tinley Moraine Genealogists, Tinley Park
- Tinley Park Historical Society
- Wilmette Historical Museum & Wilmette Historical Society, Wilmette
Crawford County
- Crawford County Historical Society, Robinson
Cumberland County
- Cumberland County Historic Society, 216 Cumberland St Box 582, Greenup IL 62428; 217-923-9306
DeKalb County
DeWitt County
Douglas County
- Douglas County Genealogical Society, P.O. Box 113, Tuscola, IL 61953
- Douglas County Museum
DuPage County
- DuPage County Genealogical Society, Lombard
- Fox Valley Genealogical Society, Naperville (Covers portions of DuPage, Kane, Kendall, & Will counties)
- Genealogical Forum of Elmhurst, Elmhurst
- Hinsdale Historical Society, Hinsdale
- Western Springs Historical Society, Western Springs
Edgar County
Edwards County
- Edwards County Historical Society, 212 W. Main St, Albion, IL 62806
- Edwards County Historical Society Museum
Effingham County
- Effingham County Genealogical and Historical Society, PO Box 1166, Effingham, IL 62401
- Effingham County Cultural Center and Museum
Fayette County
Ford County
Franklin County
Fulton County
Greene County
- Greene County Historical & Genealogical Society
Grundy County
- Carbon Hill Museum/Historical Society, 875 Second St, Carbon Hill, (815) 634-4213, Michele Micetich, Curator/Director
- Will/Grundy Genealogical Society, Wilmington
Hamilton County
Hancock County
Hardin County
- Hardin County Historical & Genealogical Society, PO Box 72, Elizabethtown, IL 62931
Henry County
- Galva Historical Society, Galva
- Henry County Genealogical Society, Kewanee
- Henry County Historical Society, Bishop Hill
- Kewanee Historical Society, Kewanee
Iroquois County
- Iroquois County Genealogical Society, Watseka
- Iroquois County Historical Society, Watseka
Jackson County
- Jackson County Historical Society, Murphysboro
Jasper County
- Jasper County Genealogical & Historical Society, 100 S. VanBuren, Newton, IL 62448
Jefferson County
- Jefferson County Historical Society
- Jefferson County Genealogical Society, 101 S. Seventh St, Mt. Vernon, IL 62864-4187
- Mt. Vernon Genealogical Society, 101 S. Seventh, Mt. Vernon, IL 62864
Jersey County
- Jersey County Genealogical Society, Jerseyville
Jo Daviess County
Johnson County
Kane County
- Elgin Genealogical Society, Elgin
- Fox Valley Genealogical Society, Naperville (Covers portions of DuPage, Kane, Kendall, & Will counties)
- Kane County Genealogical Society, Geneva
Kankakee County
- Kankakee Valley Genealogical Society, Bourbonnais
- Kankakee County Historical Museum, Kankakee
Kendall County
- Fox Valley Genealogical Society, Naperville (Covers portions of DuPage, Kane, Kendall, & Will counties)
- Kendall County Genealogical Society, PO Box 123, Yorkville, IL 60560-0123
- Kendall County Historical Society, Yorkville
Knox County
- Knox County Genealogical Society, Galesburg
Lake County
- Barrington Area Historical Society, Barrington
- Lake County Genealogical Society, Mundelein
- Lakes Region Historical Society and Museum
- Warren Township Historical Society, Gurnee
- Waukegan Historical Society, Waukegan
- Zion Genealogical Society
LaSalle County
- Earlville Community Historical Society, Earlville; Maureen Corrigan, Director Earl Township Public Library for dates and times.
- LaSalle County Genealogy Guild, Ottawa
Lawrence County
- Lawrence County Historical Society, Lawrenceville
Lee County
Livingston County
- Dwight Genealogical Society, PO Box 315, Dwight IL 60420
- Lexington Genealogical & Historical Society, Inc., Lexington (Covers Livingston, McLean & Woodford Counties)
- Odell Prairie Trails Historical & Genealogical Society, PO Box 82, Odell IL 60460
Logan County
- Logan County Genealogical & Historical Society, Lincoln; email
- Mt. Pulaski Township Historical Society, Mt. Pulaski
Macon County
- Decatur Genealogical Society, Decatur; email
- Macon County Historical Society & Museum, Decatur
Macoupin County
Madison County
- Madison County Genealogical Society, Edwardsville
- Troy Historical Society, Troy
Marion County
Marshall County
- City of Henry Historical & Genealogical Society, 610 North St, Henry IL 61537
- Marshall County Historical Society, Lacon
Mason County
- Mason County Genealogical & Historical Society, Havana
- Mason City Area and Family History Society, Mason City
Massac County
- Massac County Genealogical Society, Metropolis
McDonough County
McHenry County
- McHenry County Genealogical Society, Crystal Lake
McLean County
- Lexington Genealogical & Historical Society, Inc., Lexington (Covers Livingston, McLean & Woodford Counties)
- McLean County Genealogical Society, Normal
- McLean County Historical Society, Bloomington
Mercer County
Monroe County
- Monroe County Genealogical Society, Columbia
Montgomery County
Morgan County
- Jacksonville Area Genealogical & Historical Society, Jacksonville
- Meredosia Area Historical & Genealogical Society, PO Box 304, Meredosia IL 62665
- Waverly Genealogical & Historical Society, 157 E. Tremont, Waverly IL 62692
Moultrie County
Ogle County
Peoria County
- Peoria Genealogical Society, Peoria
Perry County
- Perry County Historical Society, 108 W. Jackson St, Pinckneyville IL 62274
Piatt County
- Piatt County Genealogical & Historical Society, Monticello
Pike County
- Griggsville Area Genealogical & Historical Society, PO Box 75, Griggsville IL 62340
- Pike County Historical Society
- Pike/Calhoun Genealogical Society, PO Box 104, Pleasant Hill IL 62366
Putnam County
- Putnam County Historical Society, Hennepin IL 61327
Randolph County
- Randolph County Genealogical Society, Chester
Richland County
- Richland County Genealogical Society, PO Box 202, Olney IL 62450
Rock Island County
- Colonel Davenport Historial Foundation Rock Island, Rock Island
- Hampton Historical Society, 601 1st Ave, Hampton IL 61256; (309) 755-0362
- Rock Island Arsenal Historical Society, Rock Island IL 61299
- Rock Island County Historical Society
- Rock Island County IL Genealogical Society, Rock Island
Saline County
- Saline County Genealogical Society, PO Box 4, Harrisburg IL 62946
Sangamon County
- Sangamon County Genealogical Society, Springfield
Schuyler County
Shelby County
St. Clair County
- Freeburg Genealogical & Historical Society
- Marissa Genealogical & Historical Society, Marissa
- O’Fallon Historical Society, O’Fallon
- St Clair County Genealogical Society, Belleville
- St Clair County Genealogical Society, Belleville
- Belleville Historical Society, Belleville
- Millstadt Historical Society, Millstadt – no website yet – for information call 618 476-3696
Stark County
Stephenson County
- Lena Area Historical Society, PO Box 620, Lena IL 61048
- Stephenson County Genealogical Society, PO Box 514, Freeport IL 61032
- Stephenson County Historical Society, Freeport
Tazewell County
Union County
Vermilion County
Warren County
Washington County
- Washington County Historical Society, 326 S. Kaskaskia St, Nashville IL 62263
Wayne County
- Wayne County Historical Society Fairfield
White County
Whiteside County
- Morrison Historical Society, 229 E. Main St, PO Box 1, Morrison IL 61270
- Prophetstown Area Historical Society, 320 Washington St, Prophetstown IL 61277
- Sterling-Rock Falls Historical Society, Sterling
- Tampico Area Historical Society, Tampico
- Tri-Township Heritage House, 306 Lime St, Albany IL 61230 (covers Albany, Garden Plain, Newton Twps.)
- Whiteside County Genealogists, PO Box 145, Sterling IL 61081
Will County
- Fox Valley Genealogical Society, Naperville (Covers portions of DuPage, Kane, Kendall, & Will counties)
- Lockport Area Genealogical & Historical Society, Lockport
- Northern Will County Genealogical Society, Bolingbrook
- South Suburban Genealogical & Historical Society
- Will/Grundy Genealogical Society, Wilmington
- Will County Historical Society
Williamson County
Winnebago County
- Kishwaukee Genealogists, Rockford
- Winnebago & Boone Counties Genealogical Society, Rockford
Woodford County
- Lexington Genealogical & Historical Society, Inc. (Covers Livingston, McLean & Woodford Counties)