McCoy's West Port Landing soon combined in the 1830s with Chouteau's Town atop the levee bluff to form the settlement called Kansas.

It suffered the American Civil War's Battle of Westport in October 1864, and wagon trails became obsolete to distant railroads, so West Port declined to rural town status.

His son John Calvin McCoy built a two-story residence and trading post at what became the northeast corner of Westport Road and Pennsylvania Ave.

In 1851, the Ewing Brothers built a store at what became the northwest corner, and which became Kelly's Westport Inn, which is the oldest surviving building in KCMO.

[3] John McCoy was a degreed surveyor by trade, and platted West Port, buying the parcel from his brother in law and fellow missionary Johnston Lykins,[citation needed] and then formally incorporated in February 1857.

[7][8][9] The historic Nutterville area, east of Broadway Street, was developed by James B. Nutter Sr. who ensured that its old homes were restored by being adapted as business offices.