The community of Humboldt celebrated when a new Post Office building opened its doors to the public in March 1956. The yellow brick building saw several changes over its years of operation, including a large addition in the mid-1960s and the addition of a lift for the inside steps in the late-1990s. The building’s owners leased the basement to a variety of businesses and organizations, including a local law firm from 1990 to 1995; the space has remained vacant since.

Air quality tests revealed mold problems in the building in April 2003, forcing the post office to relocate. The Humboldt Independent notes the tests were conducted following reports of employees getting sick in the building. The Post Office quickly moved to a “temporary” location in a former drugstore a few blocks southeast in downtown Humboldt. A 2004 plan to construct a new, permanent location for the Humboldt Post Office was scrapped due to U.S. Postal Service budget concerns. The once-temporary location remains home to the Post Office today.

Current Humboldt Post Office Location