Top 100 Biggest Cities In Illinois (1840 Census)

Rank City 1840 Pop
1 Chicago 4,470

What is the largest city in Illinois in 1840?

In 1840, the largest city in Illinois was Chicago, with a population of 4,470.

View Biggest Illinois Cities From Different Years

1800s 1840 1850 1860 1870 1880 1890
1900s 1900 1910 1920 1930 1940 1950
1960 1970 1980 1990
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