Illinois - Significance region: Local
| Bolivia Road Bridge |
| Boult, H. P., House |
| Bradley, B. Harley, House and Stable |
| Brainerd Bungalow Historic District |
| Brainerd, Charles, House |
| Bressmer-Baker House |
| Bretz, John F., House and Warehouse |
| Brewer, May (Carns) and John E., House |
| Bridge at Thirteenth Street |
| Briggs, Alexander, House |
| Brigham, Edmund D., House |
| Brinkerhoff, George M., House |
| Briscoe Mounds |
| Bristol Congregational Church |
| Broadview Hotel |
| Broadway Historic District |
| Brookner, Christopher, House |
| Brower, Adolphus W., House |
| Brown Shoe Company Factory |
| Brown, William, Building |
| Bruce, James, Round Barn |
| Brunk Farmstead |
| Brussels Historic District |
| Bryn Mawr Avenue Historic District |
| Buckingham Building |
| Buena Park Historic District |
| Buffalo Grove Lime Kiln |
| Buffalo Township Public Library |
| Building at 14-16 Pearson Street |
| Building at 201 North Market Street |
| Building at 203-205 North Market Street |
| Building at 2440 N. Lakeview Avenue |
| Building at 257 East Delaware |
| Building at 320 West Oakdale Avenue |
| Building at 399 West Fullerton Parkway |
| Building at 5510 North Sheridan |
| Building at 900 West Lake Street |
| Burgess-Osborne Memorial Auditorium |
| Burlingham Building |
| Burnham, Anita Willets, Log House |
| Burns, Dr. William, House |
| Bush Temple of Music |
| Butler School |
| Caldwell Farmstead |
| Calhoun, Mr. James Kent, House |
| Calumet Park |
| Camelback Bridge |
| Camp Mather-Camp Logan |
| Camptown Town Hall |
| Carling Hotel |
| Carney, John, House |
| Carr House |
| Carthage Courthouse Square Historic District |
| Castlewood Terrace |
| Catlow Theatre |
| Cave-In-Rock |
| Cedar Crest Addition Historic District |
| Cemetery Road Bridge |
| Central Berwyn Bungalow Historic District |
| Central Geneva Historic District |
| Central House |
| Centralia Commercial Historic District |
| Central Manufacturing District-Pershing Road Development Historic District |
| Central National Park Building |
| Cermak, Anton, House |
| Cermak Road Bridge Historic District |
| Champaign Downtown Commercial District |
| Chana School |
| Charles Warrington Earle School |
| Chicago and Eastern Illinois Railroad Depot |
| Chicago and Northwestern Depot |
| Chicago and North Western Railroad Depot |
| Chicago and North Western Railway Power House |
| Chicago Beach Hotel |
| Chicago Bee Building |
| Chicago, Burlington, and Quincy Railroad Depot |
| Chicago, Burlington, and Quincy Railroad Depot |
| Chicago, Burlington & Quincy Railroad Depot |
| Chicago, Burlington & Quincy Railroad Depot |
| Chicago, Burlington & Quincy Railroad Station |
| Chicago Club |
| Chicago Great Western Railroad Depot |
| Chicago, Milwaukee and St. Paul Railway Passenger Depot |
| Chicago Municipal Tuberculosis Sanitarium District |
| Chicago & North Western Railway Stone Arch Bridge |
| Chicago, Rock Island and Pacific Railroad Depot |
| Chicago Telephone Company Kedzie Exchange |
| Chicago Varnish Company Building |
| Chicago Vocational School |
| Chick House |
| Children's Village-Illinois Soldiers' and Sailors' Children's School |
| Childs, Robert A. and Mary, House |
| Chipman, Edith, House |
| Chipman, Edward, Public Library |
| Chippiannock Cemetery |
| Christ Church of Lower Kickapoo |
| Christenson-Anderson Farm |
| Christ Episcopal Church |
| Christ Episcopal Church |
| Church of Christ |
Data from United States Park Service and Wikidata
