Itasca County was first formed in 1849, upon the creation of
the Minnesota Territory. It was originally a much larger county, which
covered many of today's northeastern Minnesota counties. The original
Itasca County stretched over Cook, Lake, Saint Louis, Koochiching, eastern Lake
of the Woods, eastern Beltrami, Itasca, northern Aitkin, and northern Carlton counties,
today in Minnesota.
Itasca
County was originally named for Lake Itasca (no longer in the
county). It was found to be the true source of the Mississippi River.
After many disputes over finding the source of the Mississippi River, Henry Roe
Schoolcraft set out to find its true source in 1832. Once he came upon its true
source, he decided to name this 'Lake Itasca.' The Mississippi River flows from
its small beginnings at Lake Itasca past Bemidji, through Itasca County
and continues all the way down to the Gulf of Mexico.