Simpsonville is a small unincorporated town

Unincorporated area

In law, an unincorporated area is a region of land that is not a part of any municipality.To "incorporate" in this context means to form a municipal corporation, a city, town, or village with its own government. An unincorporated community is usually not subject to or taxed by a municipal government...

 in northwestern Upshur County

Upshur County, Texas

As of the census of 2000, there were 35,291 people, 13,290 households, and 10,033 families residing in the county. The population density was 60 people per square mile . There were 14,930 housing units at an average density of 25 per square mile...

, Texas

Texas

Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. Originally named Chelsea when founded in the 1850s, the town name was changed to Simpsonville on April 22, 1858, in honor of an early settler. Highway signage and road maps indicate this community is named Thomas, due to a subsequent renaming of the town occasioned in 1913 when the town's application for a new post office — the most recent post office had been closed in 1906 by postal officials — had been rejected on the grounds that a Matagorda County town called Simpsonville had just been granted a post office.