1721 - Civil administration as part of French Louisiana.
1763 A Brief History - British sovereignty, part of Western Wilderness Territory, military rule.
1774 - British military rule, Province of Quebec.
Dec 1778 Early Colonial History - Illinois was organized into a County belonging to Virginia. Included all land northwest of the Ohio River.
Mar 1, 1784 A Brief History Chapter 3 - The County of Illinois was ceded by the State of Virginia to the United States, the thirteen colonies in common, and became part of the Northwest Territory.
April 27, 1790 Illinois 1790 (N. W. Territory) - Illinois was about 2/3 of the current day size and was formed into two counties. We were in St. Clair County.
July 4, 1801 Illinois 1801 (Indiana Territory) - Illinois was expanded to today's size and became a portion of the Indiana Territory on July 4, 1801. We remained in St. Clair County.
Jan 24 or Mar 25, 1803 Illinois 1803 (Indiana Territory) - County boundaries redefined - our southeastern tip now belongs to Randolph County, the remainder was still in St. Clair.
Mar 1, 1809 Illinois 1809 (Illinois Territory) - Illinois Territory separated from the Territory of Indiana and was established with two counties - we remained primarily in St. Clair County with the southeastern tip still in Randolph County.
Mar 1812 Illinois 1812 - First smaller counties of Illinois established. Our southeast portion remained Randolph County, our northern third of land now belonged to Madison County, the remainder is St. Clair County.
Dec. 11,1813 Illinois 1813 - Our southeast tip is now St. Clair County also, northern third is Madison County.
Jan 4, 1817 Illinois 1817 - Our northern third is now a portion of the new Bond County, remainder is still St. Clair.
Dec 3, 1818 Illinois 1818 - Illinois became the 21st State. Our northern third remains Bond County, the remainder is now a portion of the 11-month old Washington County. See our 1818 census now on-line.
Feb. 14, 1821 Illinois 1821 - The eastern fourth of our land that belonged to Bond County became a portion of the new Fayette County.
Dec 28, 1824
1824 - Clinton County was established. Took the majority of our land
from Washington and additional land from Bond and Fayette Counties, and began
our existence in our present boundaries, a total of 498 square miles. See our
census now on-line.