Established in 1825 in honor of our sixth President, John Quincy Adams, the county lies on the banks of the Mississippi River in western Illinois. It is bounded on the north by Hancock County and by Pike County on the south.
The county seat is Quincy and the county population on July 1, 1999, was 66,951, an increase of 861 over the 1990 census. Quincy is known to be the seventh site (of eight) of the Abraham Lincoln-Stephen A. Douglas debates of 1858.
At one time (1870), Quincy (known as the "Gem City") surpassed Peoria as the 2nd largest city in Illinois--due in large part to the massive railroad bridge across the Mississippi connecting Illinois to Kansas City.
For information on county government, contact the National Association of Counties Web site.
Additional information is available at these pages: