Orange County is one of 254 counties of the State of Texas and its county seat is the city of Orange, Texas. As of the 2010 census, its the population was 81,837. Orange County is the county in the very southeastern corner of Texas, with a boundary with Louisiana but does not have a seacoast on the Gulf of Mexico as Jefferson County and Sabine Lake border Orange County to the South. Orange County is located in the general Golden Triangle of Texas - the Jefferson County - Orange County area.
Orange County is bordered on its east by the Sabine River - the border with Louisiana, on its southeast by Sabine Lake, on its west by Jefferson County - its parent county, and on its north by three different counties of Texas. Also on its northwestern border is the Neches River.
The biggest building in Orange County is the West Orange-Stark Elementary School, built in 2010. See West Orange-Cove Consolidated Independent School District.
The geography of Orange County varies relatively little, with an elevation that reaches 33 feet (10 meters) above sea level at very few points within the county. Orange County is very flat, and its soil is quite sandy, as could be expected in a county along the Gulf of Mexico. (Sandy soil is also common in southern Louisiana, Mississippi, and Alabama, and in western and southern Florida.) There are saltwater marshes in much of the southeastern part of Orange County that borders the Sabine River. There are piney woods (sometimes capitalized) in the northern part of the county.
According to the U.S. Census Bureau, Orange County has a total area of , of which is land and (6.10%) is water.