Old Historical City, County and State Maps of Illinois

Our collection of old historical maps of Illinois span over 200 years of growth. View Illinois Maps such as historical county boundaries changes, old vintage maps, as well as road / highway maps for all 102 counties in Illinois.

Maps of Illinois

Most historical maps of Illinois were published in atlases. The Illinois Territory was organized on March 1, 1809. The State of Illinois was created as the 21st state on December 3, 1818. States bordering Illinois are are Indiana, Kentucky, Missouri, Iowa and Wisconsin.

Map of Illinois with the counties and the county seats

Map of Illinois with the counties and the county seats

Several types of maps are useful for genealogists. The Illinois State Historical Library has county plat books and atlases available for the years of around 1870 to 1930. Those maps show townships and ownership of various lands at the times that the maps were drawn.

However, plat books must be examined on-site. They are not available for loans or photocopying. The University of Illinois, Champaign-UrbanaChicago Historical Society, and the Illinois State Library also have large Illinois map collections available.

The Illinois State Library can also provide a list of its land map and atlas holdings. The oldest available Illinois Sanborn map is from 1884.

The following offices have free highway maps for Illinois available:

  • Illinois Secretary of State
  • Communications Department
  • Department of Commerce and Community Affairs

Solving Research Problems with a Illinois Maps – If you have started your family research, you might have experienced trouble with trying to identify Illinois city borders and names that have changed over the course of time. This can make it difficult to understand where your ancestors’ information is kept.

Because Illinois historic maps were usually commissioned by the county seat, they often display information about the county, including town names. Reading a Illinois map from the time period you are researching can help tremendously in solving these problems by leading you to the correct town records. It can also give you other leads, such as the location of city directories or old post offices in Illinois.

Choosing the Best Illinois Map – If you have a large source of maps to choose from, try starting with the area where your ancestors resided and looking for the maps with the most detail.  You can determine a lot by seeing if the area was still rural or more developed, and how far it was to the nearest city.  This can shed light on your family’s lifestyle and occupation. Were they farmers who lived in the country, or merchants who traveled often to a nearby city?  A map can give you an idea of what occupations were possible.

Map of Illinois County Formations 1790-1869

This Interactive Map of Illinois Counties show the historical boundaries, names, organization, and attachments of every county, extinct county and unsuccessful county proposal from the creation of Illinois in 1790-1869.

Illinois contains 102 counties.

St. Clair County was the first county created in 1790. The last counties to be formed was Douglas County and Ford County in 1859.

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Illinois County Formation Years

Illinois Map Abbreviations

  1. unorg. = unorganized
  2. g. = gained
  3. w. = with
  4. fr. = from
  5. atmt. = attachment
  6. exch = exchanged
  7. nca.= non county area
  8. ch. = changed
  9. Ad  – Adams
  10. Al   – Alexander
  11. Bon – Bond
  12. Boo – Boone
  13. Br   – Brown
  14. Bu   – Bureau
  15. Cal – Calhoun
  16. Car – Carroll
  17. Cas – Cass
  18. Cha – Champaign
  19. Chr – Christian
  20. Cli – Clinton
  21. Clk – Clark
  22. Cly – Clay
  23. Col – Coles
  24. Coo – Cook
  25. Cr   – Crawford
  26. Cu   – Cumberland
  27. DK   – De Kalb
  28. Do   – Douglas
  1. DW   – De Witt
  2. DP   – DuPage
  3. Edg – Edgar
  4. Edw – Edwards
  5. Ef   – Effingham
  6. Fa   – Fayette
  7. Fo   – Ford
  8. Fr   – Franklin
  9. Fu   – Fulton
  10. Ga   – Gallatin
  11. Gr   – Grundy
  12. Gre – Greene
  13. Ham – Hamilton
  14. Han – Hancock
  15. Har – Hardin
  16. Hry – Henry
  17. Hsn – Henderson
  18. Ir   – Iroquois
  19. Jac – Jackson
  20. Jas – Jasper
  21. JD   – Jo Daviess
  22. Jef – Jefferson
  23. Jer – Jersey
  24. Jo   – Johnson
  25. Ke   – Kendall
  26. Kke – Kankakee
  27. Kn   – Knox
  1. Kne – Kane
  2. Lak – Lake
  3. Law – Lawrence
  4. Lee – Lee
  5. Li   – Livingston
  6. Lo   – Logan
  7. LS   – La Salle
  8. Mad – Madison
  9. McD – McDonough
  10. McH – McHenry
  11. McL – McLean
  12. Mcn – Macon
  13. Men – Menard
  14. Mer – Mercer
  15. Mor – Morgan
  16. Mou – Moultrie
  17. Mpn – Macoupin
  18. Mrn – Marion
  19. Mro – Monroe
  20. Msc – Massac
  21. Msl – Marshall
  22. Msn – Mason
  23. Mty – Montgomery
  24. Og   – Ogle
  25. Peo – Peoria
  26. Per – Perry
  27. Pia – Piatt
  28. Pik – Pike
  1. Po   – Pope
  2. Pul – Pulaski
  3. Put – Putnam
  4. Ra   – Randolph
  5. Ri   – Richland
  6. RI   – Rock Island
  7. Sal – Saline
  8. San – Sangamon
  9. SC   – St. Clair
  10. Sch – Schuyler
  11. Sco – Scott
  12. Sh   – Shelby
  13. Sta – Stark
  14. Ste – Stephenson
  15. Ta   – Tazewell
  16. Un   – Union
  17. Ve   – Vermilion
  18. Wab – Wabash
  19. War – Warren
  20. Was – Washington
  21. Way – Wayne
  22. Wil – Will
  23. Win – Winnebago
  24. Wo   – Woodford
  25. Wsd – Whiteside
  26. Wsn – Williamson
  27. Wte – White

Illinois County Map of Road and Highway’s

The Illinois D.O.T. Highway Department has prepared a series of 2010 county road maps. These maps contain more detailed information about man-made features than the geological survey maps. In addition to roads and boundaries, these maps include rural communities, churches, and cemeteries.

These maps are downloadable and are in PDF format. The main use of these are the locations of all known cemeteries in a county and of course the various roads and church locations. These Maps are Free to Download

Illinois Township General Highway Maps

These Township Maps emphasize the display of the road network on a regional basis without regard to specific city and village boundaries.

Old Historical Atlas Maps of Illinois

This Historical Illinois Map Collection are from original copies so you can see Illinois as our ancestors saw them over a hundred years ago.

Some Illinois map years (not all) have cities, railroads, P.O. locations, township outlines and other features useful to the Illinois researcher.

External Illinois Map Links

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