Illinois - Significance region: Local
| 2678 W. Washington Boulevard |
| 42nd Precinct Police Station |
| 7th District Police Station |
| Abraham Lincoln School |
| Adams Building |
| Adams Memorial Library |
| Addams, John H., Homestead |
| Adler, Mrs. Isaac D., House |
| AF and AM Lodge 687, Orangeville |
| Ahrens, Henry, House |
| Airtight Bridge |
| Akin, Mrs. Henry F., House |
| Alexis Opera House |
| Allen Chapel African Methodist Episcopal Church |
| Allen, Dr. Arthur W., Home |
| Allen School |
| Allentown Union Hall |
| Alpha Delta Phi Fraternity House |
| Alpha Delta Pi Sorority House |
| Alpha Gamma Delta Fraternity House |
| Alpha Phi Fraternity House-Beta Alpha Chapter |
| Alpha Rho Chi Fraternity House |
| Alpha Xi Delta Sorority Chapter House |
| Alton Gas & Electric Power House |
| Ambler's Texaco Gas Station |
| Amboy Illinois Central Depot |
| America Fore Building |
| American State Bank |
| Anderson-Carlson Building |
| Anderson, John C., House |
| Andersonville Commercial Historic District |
| Aplington, Zenas, House |
| Aquitania, The |
| Arcada Theater Building |
| Arcade Building |
| Arcola Carnegie Public Library |
| Ardmore Avenue Train Station |
| Ariston Cafe |
| Armour, Philip D., III, House |
| Armour's Warehouse |
| Arsenal Courts Historic District |
| Ashelford Hall |
| Atkinson Hall |
| Auburn Gresham Bungalow Historic District |
| Aurora Broadway Historic District |
| Austin Historic District |
| Austin Town Hall Park Historic District |
| Avalon Park Bungalow Historic District |
| Ayer Public Library |
| Ayers Bank Building |
| Bachmann, Charles and Naomi, House |
| Badollet House |
| Bailey-Michelet House |
| Bailey, William S., House |
| Baker, George, House |
| Baldwin, Hiram, House |
| Baltimore and Ohio Railroad Depot |
| Banta, Nathaniel Moore, House |
| Baptist Retirement Home |
| Barber, Bryant H. and Lucie, House |
| Barber-Colman Company Historic District |
| Barrington Historic District |
| Bassett, Orland P., House |
| Beach, Thomas A., House |
| Beall-Orr House |
| Beardstown Grand Opera House |
| Beecher Mausoleum |
| Beith, William, House |
| Belden Stratford Hotel |
| Belmonte Flats |
| Belmont-Sheffield Trust and Savings Bank Building |
| Belvidere Cafe, Motel and Gas Station |
| Belvidere High School |
| Belvidere North State Street Historic District |
| Belvidere South State Street Historic District |
| Benda House |
| Benjaminville Friends Meetinghouse and Burial Ground |
| Bennett, Edward H., House and Studio |
| Berger-Kiel House |
| Berger Park |
| Bersbach, Alfred, House |
| Berwyn Health Center |
| Berwyn Municipal Building |
| Best Brewing Company of Chicago Building |
| Best Building |
| Beta Theta Pi Fraternity House |
| Bethalto Village Hall |
| B.F. Goodrich Company Showroom |
| Big Woods School |
| Bishop’s Busy Big Store-Lyric Opera House |
| Black Hawk Museum and Lodge |
| Blackman, George, House |
| Black, Margaret, Farmstead |
| Blackstone Hotel |
| Blair Historic District |
| Blair, William McCormick, Estate |
| Blakeman Bridge |
| Bloomingdale School-Village Hall |
| Bloomington High School |
| Bohlander, Jacob, House |
Data from United States Park Service and Wikidata
