• National Register of Historic Places in Illinois by county‎ (101 C)
• National Register of Historic Places in Illinois by populated place‎ (3 C)

*

• Lists of National Register of Historic Places in Illinois‎ (2 C, 1 P)

A

• Archaeological sites on the National Register of Historic Places in Illinois‎ (2 C, 77 P)

B

• Buildings and structures on the National Register of Historic Places in Illinois‎ (18 C, 2 P)

C

• Conflict sites on the National Register of Historic Places in Illinois‎ (3 P)
• Historic district contributing properties in Illinois‎ (1 C, 127 P)

D

• Historic districts on the National Register of Historic Places in Illinois‎ (4 C, 255 P)

F

• Former National Register of Historic Places in Illinois‎ (22 P)

I

• Illinois National Register of Historic Places templates‎ (4 P)

M

• Monuments and memorials on the National Register of Historic Places in Illinois‎ (19 P)

N

• National Historic Landmarks in Illinois‎ (2 C, 58 P)
• National Historic Sites in Illinois‎ (3 P)
• National Register of Historic Places Multiple Property Submissions in Illinois‎ (1 C, 6 P)

P

• Parks on the National Register of Historic Places in Illinois‎ (2 C, 10 P)
• Populated places on the National Register of Historic Places in Illinois‎ (4 P)

R

• Properties of religious function on the National Register of Historic Places in Illinois‎ (2 C, 7 P)

T

• Transportation on the National Register of Historic Places in Illinois‎ (4 C)

Σ

• Illinois Registered Historic Place stubs‎ (3 C, 1 P)

• National Register of Historic Places listings in Illinois

C

• Chicago Portage National Historic Site

D

• Douglas R4D-3 N763A

L

• Lincoln's New Salem

M

• Millburn, Illinois

T

• T. Goings Building

W

• Worry Bird