Question: Mississippi Highway 469 runs north–south from Mississippi Highway 468 in Brandon, a city in Rankin County, Mississippi, and what is the county seat?
Context: Mississippi Highway 605 (MS 605) is a state highway in Mississippi.  It is an expressway and generally runs north from U.S. Highway 90 in Gulfport, to a cloverleaf interchange with Mississippi Highway 67 in Saucier.  MS 605 is located entirely within Harrison County. The Mississippi State Hospital (MSH) is a psychiatric facility operated by the Mississippi Department of Mental Health.  It is located in the unincorporated community of Whitfield, Rankin County, Mississippi, along Mississippi Highway 468.  The 350 acre campus is 15 mi southeast of Jackson, between Jackson and Brandon.  Historically many people referred to the center as "Whitfield," after the community in which it is located. Mississippi Highway 365 runs north–south through Tishomingo County, Mississippi.  Its northern terminus is on Mississippi Highway 25 near Pickwick Lake, and its southern terminus is on Mississippi Highway 30 west of Paden, Mississippi. Mississippi Highway 9 runs north–south from Mississippi Highway 30 east of New Albany to Mississippi Highway 12 in Ackerman.  It runs approximately 105 mi , serving Choctaw, Webster, Calhoun, Pontotoc, and Union counties. Okolona College, also known as Okolona Industrial School, and Okolona Normal & Industrial School, was a college for African Americans in Okolona, Mississippi, Chickasaw County, Mississippi.  It was added to the National Register of Historic Places on August 9, 2002.  The school is located on Mississippi Highway 245 1.1 miles north of the junction with Mississippi Highway 32 and Mississippi Highway 41.  It is part of The Okolona College Historic District. Brandon is a city in Rankin County, Mississippi.  The population was 21,705 at the 2010 census.  It is the county seat of Rankin County.  Brandon is part of the Jackson Metropolitan Statistical Area and located east of the state capital. Mississippi Highway 43 generally runs north–south in three segments: the first from U.S. Highway 90 near Bay St. Louis to Mississippi Highway 13 south of Columbia, resuming at MS 13 in southern Jefferson Davis County to end near Mendenhall, and finally starting again at Mississippi Highway 18 near Puckett to end at Attala Road 3122 in northern Attala County.  It traverses approximately 235 mi , serving Hancock, Pearl River, Marion, Jefferson Davis, Lawrence, Simpson, Rankin, Madison, Leake, and Attala counties. Mississippi Highway 469 runs north–south from Mississippi Highway 468 in Brandon, Mississippi to Mississippi Highway 28 east of Georgetown, Mississippi. Mississippi Highway 468 runs from Mississippi Highway 475 in Flowood, Mississippi where it is known as Flowood Drive to Mississippi Highway 469 in Brandon, Mississippi.  It is known as Pearson Road in Pearl, Mississippi. Mississippi Highway 35 (MS 35) is a state highway in Mississippi.  It runs north–south for 266.73 mi , beginning at the Louisiana/Mississippi state line and ending at a junction with Mississippi Highway 315.  MS 35 serves the counties of Marion, Jefferson Davis, Covington, Smith, Scott, Leake, Attala, Carroll, Grenada, Tallahatchie, and Panola.
Answer: Rankin County