Richard A. Walker designed Macon in the Classical Revival style and the library was built from red brick and limestone trim with a slate roof at a cost of $93,481 (equivalent to $2,200,000 in 2023).

Despite the changes, design elements present at the library's opening remain, including some bookshelves, guardrails, and wood paneling.

[3] Between 1948 and 1949, Macon was closed for a repainting, the installation of new windows, the addition of a new heater, and the removal of partitions in its reading areas.

[4] Efforts to modernize the library's interior space took place from 1973 to 1977 including an HVAC upgrade, the construction of an auditorium, and the installation of fluorescent lighting.

The project was intended to bring the library closer to its original appearance by making HVAC systems less visible and replacing the hanging fluorescent lights with lamps like those in the space when it opened.

Macon Library is capped with a dentillated cornice, below which its windows rest, high on the building's facade.

On the upper level, the original metal guardrail continues to protect patrons, and the bookcases and wood paneling that was present when Macon opened is also still used.