The United States Courthouse is a 3-story Renaissance Revival Federal building, executed in white marble. The building is raised about 3' on a granite base; 12 steps run the width of the main elevation. First floor openings are arched and square 2nd floor windows have iron balconies. Fluted pilasters with corinthian capitals support a simple full-width entablature with the words "United States Post Office" inscribed. Above the entablature is an attic (3rd) story, surmounted by a red clay mission tile roof with carved bracketed rafter ends.
The exterior is an excellent example of the Renaissance Revival style and is in good, original condition.