The railroad naturally drew some residents and businesses to the area. The first was a gristmill and sawmill located approximately where the Nickel Plate Bar & Grill restaurant is today. Most of the early history of Hamilton County centers around Delaware Township, which was purchased from the Indians when Indiana became a state in 1816. Federal guidelines were set up for the orderly sale of acquired Indian Territory, and the first land rush began.
At the time of the purchase, William Conner was the only European residing in Delaware Township. He operated a trading post, which is now the modern day Conner Prairie Interactive History Park, Conner's house was connected via an Indian trail to Anderson and Connersville and by state road to Fort Wayne. Portions of this road later became Allisonville Road. The first official wave of settlers came to the 'southeastern' area in the 1820's.
In 1823, Delaware Township was divided into three townships by adding Clay to the west and Fall Creek to the east. The railroad was constructed in 1851 and eventually extended to Chicago in the early 1870's when Fishers Switch was platted. From that time, Fishers population grew slowly to just 388 residents by the 1960 census.
However, the relocation of SR-37 to the east side of town and the subsequent connection with I-69 ensured the future growth of Fishers as a residential and commercial center. Spurred by the development of Geist Reservoir in Fall Creek Township during the 1980's, the Town of Fishers would soon become a fast growing suburb of Indianapolis: the population increased from 7,187 residents in 1990 to to 78,651 residents in 2010.