The zip code for Buckingham is 50612. The postal district covers a large rural community across northern Tama County and southern Black Hawk County including such notable neighborhoods as Hickory Hollow and the old Geneseo school district.
The former village of Buckingham was once centered on N42 degrees 12.5950 minutes and W92 degrees 28.7428 minutes. At the time of the American Civil War it was the primary center of the local population, prior to the arrival of the railroads in the late 1800s. The original village of Buckingham began to decline after the railroad was built along Wolf Creek, in the valley below. This railroad was built about 1880, with the result that commercial activity and residences sprang up in the nearby Town of Traer, and correspondingly declined in the historical village of Buckingham. The former site of Buckingham remained sparsely populated through the mid-1900s. The population of the historic Buckingham settlement was 75 in 1925.[4]