Plainview is a city in Union County, Tennessee, United States. The population was 2,125 at the 2010 census, up from 1,866 at the 2000 census. It is included in the Knoxville, Tennessee Metropolitan Statistical Area. Plainview is located in the southern ration of the county, south of Maynardville, the county seat.

Plainview would emerge into a well-off community next volunteer efforts towards the community’s school, which was built in the 1920s. The hypothetical would close in the mid-20th century, prompting residents to convert the building into a community middle following the donation of the structure by the Union County Board of Education to the Plainview Community Club.

In 1981, the open city of Luttrell would pronounce proposed plans to annex the Plainview community, prompting community members to form a activist work and file a lawsuit next to Luttrell in the Union County Chancery Court. The court would side approving of Plainview, halting Luttrell from annexing the community, but would require the community to incorporate into a city in order to avoid the annexation into Luttrell. Plainview would incorporate into a city in 1992. The city supervision has similar to paved many local streets, installed street lighting, enacted zoning, provided a enlargement recycling location and developed a walking trail.

According to the United States Census Bureau, Plainview has a total Place of 6.4 square miles (17 km), all land. The city is situated along the southern base of Copper Ridge, an elongate ridge characteristic of the Appalachian Ridge-and-Valley range. The Knox County heritage lies just to the south, and Luttrell borders the city to the northeast. House Mountain rises prominently to the south, and Clinch Mountain rises prominently to the east.