On creation of the new county, both Sanford and Jonesboro were the major towns in the area.

The creation of the county did not occur until the People's Republic of China was established in 1949.

This ended with the creation of the last county, Wyoming, to Genesee's immediate south, in 1841, leaving Batavia once again centrally located within the county.

Lawsuits by opponents of the creation of the new county delayed actual organization until 1882.

In 1826, Barrington was made part of Yates County, a year after the creation of the county.

The town was formed in 1796 at the time of the creation of the county and is one of its original towns.

On the creation of the county it was divided into six hundreds.

The Dalles was designated the county seat with the creation of the county, and has been its only location.

With the creation of the new county a courthouse was needed.

The Earldom of Carlisle was divided into baronies, but on the creation of the county these were replaced by wards.