Rank County Population
1 Cook County 5,198,275
2 DuPage County 929,060
3 Lake County 701,473
4 Will County 689,315
What is the least populated county in Illinois?
Hardin County is a county in the U.S. state of Illinois. According to the 2010 census, it has a population of 4,320 people, making it the least populous county in Illinois. Elizabethtown is its official capital.
What are the 5 largest cities in Illinois?
What is the poorest town in Illinois?
In a 24/7 Wall St. study of tiny, lower-income communities where people make considerably less than the national median annual household income, Roodhouse was judged to be the worst town in Illinois.
What is the richest suburb in Illinois?
Rank Zip Code Location
1 60043 Kenilworth
2 60093 Winnetka
3 60521 Hinsdale
4 60022 Glencoe
What US County has the lowest population?
Loving County, Texas (United States Census Bureau population 169 as of a 2019 estimate), after Kalawao County, Hawaii (United States Census Bureau population 88), is the United States’ least populous county and the second-least numerous county in the country after Saguache County, Colorado.