Yorkville (officially the United City of Yorkville) is a city and county seat of Kendall County, Illinois, United States. The population was 21,533 as of the 2020 census. It is a suburb of Chicago, Illinois. History In 1836, the city of Yorkville was settled by early pioneers. Originally, the city's main thoroughfare of Bridge Street was designed for horse-drawn carriages and pedestrians. As time passed, Hydraulic Street, which runs parallel to the Fox River, boasted a trolley that ran from Ottawa to Aurora. This part is now operated by the Illinois Railway. At the time, Yorkville's central business district was on the south side of the Fox River and the public square was north of the river, a layout unique to the region. The public gathering place was near the river's edge. The Kendall County Courthouse was next to the downtown commercial district. Many of the city's remaining historic single-family homes are within walking distance of Bridge Street, the courthouse and Union Hall. Earl Adams was the first to settle what would become Yorkville when he built his cabin on Courthouse Hill on the south side of town in 1833. One year later, Lyman and Burr Bristol set up residency in neighboring Bristol, north of the river. When the county of Kendall was formed in 1841, Yorkville was chosen as the county seat. After a 13-year period in which Oswego claimed that honor, voters chose to relocate the county government in 1859 to Yorkville, a more central location. The new courthouse was completed in 1864. Replaced in 1997 with a courthouse on the city's north side, the 1864 building is used by the Kendall County Forest Preserve and other organizations. Yorkville was no exception to the railroad boom. Development began and businesses sprang up in 1870 along the tracks and included Squire Dingee's pickle factory, the Yorkville Ice Cream Company and the Rehbehn Brothers button factory. A few of those buildings still remain. The present city of Yorkville was originally two towns, Bristol to the north and the Yorkville south of the Fox River, with separate governments for more than 100 years. In 1957, Bristol and Yorkville merged, becoming the United City of Yorkville. Ellsworth Windett became the combined city's first mayor. As a part of the consolidation, the residents of both towns agreed to a uniform school district. It was in that same year high school classes began in