Chase County is on the western edge of Southwest Nebraska. Chase is bordered by Hayes County to the east, Dundy County to the south, Perkins County to the north, and the State of Colorado to the west. The county is comprised of 24 townships with the addition of a partial township at Range 42 West, Townships 5, 6, 7, and 8. Only the first section and the east half of the east half of the next section are in Chase County.