The one-story red brick building has a central recessed loggia with four stout, unfluted Doric columns in antis and a simplified stone entablature, presenting an uncommonly spare Georgian character for a federal design of the period. The hipped standing-seam metal roof replaced the original red tile material. The boldness of the columns, the lean and taught red brick mass, and the inferred Georgian style raise a question whether the design may have had local participation, particularly that of Shirley Simons, who had just completed the U.S. Post Office (TK3) in nearby Tyler. The two small roundels on each side of the loggia, a favored Simons motif, are another hint at his possible involvement.
The presence of the Central Fire Station (1929) across the street at 314 E. Lufkin, a Simons design in red brick Georgian, further supports the possibility of his contribution to the post office project. The fire station has three segmental-arched equipment bay doors, with small stone keystones. Above the front door bay is a small round window, one of his favorite features.