Today, the extant community of Union is located on FM Road 1681, about 56 miles southeast of San Antonio.

In 1872 the settlement received the gift of a log school house and land from Harriet Smith Beaty, which was replaced with a framed structure in 1878.

[1] By 1893, the town had a population of 300 and supported three general stores, a Methodist church, a mill, a saloon, the school, and a blacksmith.

The Mound Creek cemetery, north of Union near Nockenut, contains the grave site of John Wesley Hardin's first wife, Jane Bowen.

[2] There are two historical markers referring to Union Valley at the site of the original town, located today on private property off Texas farm-to-market highway FM 1681.