ZIP 49440
This is the small downtown ZIP, entirely inside city limits and counted at roughly 900 housing units. The Hackley & Hume Historic Site on Webster Avenue, the Muskegon Museum of History & Science on Clay Avenue and City Hall on Terrace Street all carry 49440 addresses. Most households rent, and the median building dates to 1953, so stairwells, upper-floor units, shared ventilation and street parking are typical planning points for a cleanup here.