 lenawee county ("lenn-a-way") is a county located in the u.s. state of michigan. as of the 2010 census, the population was 99,892. the county seat is adrian. the county was created in 1822 and organized in 1826. lenawee county comprises the adrian, mi micropolitan statistical area and is included in the detroit-warren-ann arbor, mi combined statistical area. ==history==   the county was created in 1826. it was split off from monroe county, michigan. this henry schoolcraft neologism is thought to be derived from a native american word meaning "man"âfrom the delaware "leno or lenno" or the shawnee "lenawai."michigan history, arts and libraries on sources of county names. ==geography== according to the u.s. census bureau, the county has a total area of , of which  is land and  (1.6%) is water. lenawee county is considered to be part of southeastern michigan. ===adjacent counties=== *washtenaw county (northeast) *jackson county (northwest) *monroe county (east) *[[hillsdale county, mic
1826_establishments_in_Michigan_Territory Lenawee_County,_Michigan Michigan_counties Populated_places_established_in_1826