The current Post Office in the Muscatine County community of West Liberty opened its doors to much fanfare on March 1, 1977. The new location featured more post office boxes, a larger lobby area, and a dedicated parking lot for both employees and customers. The brick post office resembled thousands of post offices opened across the country in the previous two decades. Like the other offices, the facility was built by a private construction company to lease to the U.S. Postal Service.

The Muscatine Journal noted the opening marked the first time the West Liberty Post Office occupied a new building, though it had been housed in at least eight previous locations. Postal service to West Liberty had been in place since 1838, when the first office was opened within the local general store. Immediately prior to the opening of the new location, the office was located in a downtown storefront.