The Dumas micropolitan statistical area includes all of Moore County.

Moore County history is highlighted in the Window on the Plains Museum in Dumas.

100 million years ago, the land that Moore County encompasses was part of the Western Interior Seaway.

The people of the Antelope Creek Phase inhabited the Southeastern portion of Moore county in the Canadian River Valley, approximately from AD 1200 to 1450.

According to the U.S. Census Bureau, the county has a total area of 910 square miles (2,400 km2), of which 9.9 sq mi (26 km2) (1.1%) are covered by water.

School districts:[13] All of the county is in the service area of Amarillo College.