THE SULLIVAN COUNTY LAND BRIEF
Land in the
Loess Flats and Till Plains setting.
Sullivan County has 648 square miles of land in Missouri. The mapped landscape region in Sullivan County is Loess Flats and Till Plains.
Irregular plains form a transition between northern agricultural country and more wooded uplands to the south and east. Grassland and forest historically mixed, with wider woodland belts beside streams.
Regional context: Central Irregular Plains ↗ · Regional mapping across the county footprint
Finding your parcel within Sullivan County
The atlas lists 10 cities, towns, townships, and Census communities associated with Sullivan County, including Milan, Green City, Browning. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Sullivan County by land and water
The Census records 3.52 square miles of water within Sullivan County, or 0.5% of its total area. That share is close to Sullivan County’s 0.5%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Sullivan County has 365.5 times the land area of nearby Milan city (1.77 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Adair County, Grundy County, Linn County, Mercer County, Putnam County within Missouri. A tract near one of these lines should be matched to the county identifier on its own records.

