I have looked this up in several places and I am not seeing what I believe is the correct answer. All the responses I am seeing are from counties that are in states that are fully located east of the Mississippi River.
However, St. Louis County in Minnesota is EAST of the Mississippi River, although only a portion of the entire state can make that same claim.
St. Louis County is 6860 square miles and this is slightly larger than the county that I am most commonly seeing listed as the largest east of the Mississippi: Aroostock County, Maine 6,829 square miles
Depending on your perspective:
Either...
A) St. Louis County, Minnesota 6860 square miles (St. Louis County is east of the Mississippi in its region however, the source of the Mississippi river is south of much of St. Louis county so it would be somewhat of an undefined border to determine the county is "east" of the river.
B) Aroostock County, Maine 6,829 square miles. Nobody would argue Maine isn't east of the Mississippi. :-))
Jackson, Mississippi
PERCEPTION: Michigan is the largest state east of the Mississippi River. REALITY: Georgia is the largest state east of the Mississippi River.
jackson
Hinds County is the county in Mississippi with the largest population. Hinds County includes Jackson, the state capital and the most populous city in the state.
Jackson is the largest city in Hinds County, Mississippi.
Is Kentucky Lake the largest man made lake east of the Mississippi
The lowest populated county east of the Mississippi River is Loving County in Texas. As of the 2020 Census, Loving County had a population of only about 62 people.
mississippi
There are 82 counties in the U.S. state of Mississippi. Based on population Hinds County is the most populated county in Mississippi with a population of 245,285 as of the U.S. 2010 Census. Based on area Zazoo County is the largest county in Mississippi with 920 square miles.
the biggest county in area size east of the mississippi is pike county, located in southeast kentucky.
Yazoo County is the largest county in Mississippi. Yazoo County has a total area (land and water) of 934 square miles, or 2420 km2. 1.57% of the county's total area is water. Thus: 919 mi² of Yazoo County, Mississippi is land area. 15 mi² is of Yazoo County, Mississippi is water area.
Clinton is a city in Hinds County, Mississippi. Based on population, it is the tenth largest city in Mississippi.