The site that became Bastrop functioned first as a colonial-era crossing point and trading settlement on the Colorado River, established under the empresario system associated with the Stephen F. Austin and Green DeWitt colonies. Known briefly as Mina before reverting to the name Bastrop, the settlement served frontier colonists as a supply and trade point along the river, a stopping place on routes connecting the eastern settlements to the western edge of Anglo colonization, and later as a militia and defense post during conflicts with Native American groups and in the Texas Revolution era. Its river-crossing function made it a natural node for commerce in cotton, livestock, and other agricultural goods moving between farms and larger markets. As the town formalized, it took on civic and administrative functions as the seat of Bastrop County, hosting a courthouse, county offices, churches, schools, and mercantile businesses that served the surrounding farming and ranching community. Today Bastrop continues to function as the county seat of Bastrop County and as a regional commercial and administrative center for Bastrop County government, courts, and public services. Its historic downtown, built up through the nineteenth and early twentieth centuries along the river, now serves a mixed function as a retail, dining, and tourism district, with many original commercial buildings adapted for shops, restaurants, and offices, while the broader city has grown into a residential and light-commercial suburb within the greater Austin metropolitan area.