The International & Great Northern Railroad had a track built between Rockdale and Austin, which was completed in 1876.

[2] The "McNeil" name is currently used mostly for the Austin White Lime Company facility and railroad junction.

[4] The ZIP code only includes the McNeil Post Office/Austin White Lime company store and no surrounding land.

The current rail lines are owned by the Capital Metropolitan Transportation Authority (Cap Metro) and the Union Pacific Railroad (UP).

[2] McNeil is located 15 mi (24 km) north of Austin in northern Travis County.