Category:Establishments in Illinois by decade

0–9

• 1770s establishments in the Northwest Territory‎ (1 C)
• 1780s establishments in the Northwest Territory‎ (3 C)
• 1790s establishments in the Northwest Territory‎ (8 C, 1 P)
• 1800s establishments in the Northwest Territory‎ (3 C)
• 1810s establishments in Illinois‎ (2 C)
• 1810s establishments in Illinois Territory‎ (6 C)
• 1820s establishments in Illinois‎ (10 C)
• 1830s establishments in Illinois‎ (10 C, 7 P)
• 1840s establishments in Illinois‎ (10 C, 2 P)
• 1850s establishments in Illinois‎ (10 C)
• 1860s establishments in Illinois‎ (10 C, 2 P)
• 1870s establishments in Illinois‎ (10 C, 3 P)
• 1880s establishments in Illinois‎ (10 C, 5 P)
• 1890s establishments in Illinois‎ (10 C, 6 P)
• 1900s establishments in Illinois‎ (10 C, 3 P)
• 1910s establishments in Illinois‎ (10 C)
• 1920s establishments in Illinois‎ (10 C, 4 P)
• 1930s establishments in Illinois‎ (10 C, 4 P)
• 1940s establishments in Illinois‎ (10 C, 5 P)
• 1950s establishments in Illinois‎ (10 C, 1 P)
• 1960s establishments in Illinois‎ (10 C, 5 P)
• 1970s establishments in Illinois‎ (10 C)
• 1980s establishments in Illinois‎ (10 C, 2 P)
• 1990s establishments in Illinois‎ (10 C, 2 P)
• 2000s establishments in Illinois‎ (10 C, 2 P)
• 2010s establishments in Illinois‎ (10 C, 1 P)
• 2020s establishments in Illinois‎ (5 C)