Morton County is a county located in the state of North Dakota. Based on the 2010 census, the population was 27,471, making it the
fifth-most populous county in North Dakota. The county was created by the 1872-1873 territorial legislature and named for Oliver Hazard Perry
Throck Morton (1823-1877), governor of Indiana during the American Civil War and later a United States Senator. It was organized on March 23,
1878, but the action of the 1878 legislature in attaching the eastern portion to Burleigh County effectively nullified this action. The county
was reorganized on February 18, 1881, after the detached portion had been returned to Morton County by the 1881 legislature. Mandan has always
been the county seat, though during a period from 1878 to 1879, Mandan, and thus also the county seat, was known as Lincoln.
On November 23, 1916, 1,666 square miles of southern and southwestern Morton County was detached to form Grant County. The county was originally created in 1873 and later organized in 1878.
Morton County is included in the Bismarck, ND, Metropolitan Statistical Area.
Named for Oliver Hazard Perry Throck Morton (1823-1877), governor of Indiana during the Civil War and a U. S. Senator from that state when the county was established.
County QuickFacts: CensusBureau Quick Facts
Created by the 1872-73 territorial legislature and named for Oliver Hazard Perry Throck Morton (1823-1877), governor of Indiana during the Civil War and a U. S. Senator from that state when the county was established. Government organized: March 23, 1878, but the action of the 1879 legislature in attaching the eastern portion of Morton County to Burleigh effectively nullified this action; re-organized February 18, 1881, after the detached portion had been returned to Morton County by that year's legislature. County Seat: Lincoln, 1878-1879; Mandan, 1881-present.
As reported by the Census Bureau, the county has a total area of 1,945 square miles (5,040 km2), of which 1,926 square miles (4,990 km2) is land and 19 square miles (49 km2) (1.0%) is water
Bordering counties are as follows: