Kirbyville is a city in Jasper County, Texas, United States. The population was 2,142 at the 2010 census.
Kirbyville is located at 30°39′33″N 93°53′49″W (30.659203, -93.896852).
According to the United States Census Bureau, the city has a total area of 2.4 square miles (6.2 km2), of which, 2.4 square miles (6.2 km2) of it is land and 0.41% is covered by water.
The climate of Kirbyville and surrounding areas consists of mainly hot and humid summers, while winters are usually mild. According to the Köppen Climate Classification system, Kirbyville has a humid subtropical climate, mainly because of its close proximity to the warm waters of the Gulf of Mexico.
The town was first established in 1895 when the Gulf, Beaumont, and Kansas City railroad reached the site. It was first named Kirby for John Henry Kirby, a lumber businessman who intended to use the site for building a facility to market his lumber. The post office was established the same year, but the name was changed to Kirbyville when a town already called Kirby was discovered. The town became incorporated in 1926.
On September 24, 2005, Hurricane Rita made landfall in extreme Southwest Louisiana as a Category 3 hurricane. As Rita moved inland, the center of the storm moved very near Kirbyville.