Clay County covers an area of 1,088.7 square miles of
land which is 696,320 acres, and 28 square miles of water.

The population is 10,218, according to the 2020 census.

Schools in Clay county with their estimated
enrollments include

• Bellevue ISD, with 139 students,

• Henrietta ISD with 931 students,

• Midway ISD, with 129 students, and

• Petrolia ISD with 525.

Clay County Memorial Hospital has 25 beds.

Major roadways in the county are

• US HWY 82,

• US HWY 287 N,

• US HWY 287 S,

• ST HWY 148 S, ST HWY 148 N, and

• ST HWY 79 N.

The county seat for Clay County is Henrietta.