Johnson is situated on County Roads E1110/N3460, which are located one mile north of Interstate 40. It is in the north-central area of Pottawatomie County. During the Sac and Fox Land opening, which took place on September 22, 1891, the region was initially made available to non-Indian settlement. Over the course of many years, the population has stayed quite low. The people of Johnson made the decision to incorporate in 1982 to prevent Shawnee from establishing a dump in very close vicinity to the town. An overwhelming majority of citizens, 77 to 40, voted in favor of incorporation on May 11, 1982. The population of Johnson, which encompasses an area of 3.947 square miles, was 196 in the year 1990, 223 in the year 2000, 247 in the year 2010, and 752 in the year 2020. Ninety-nine percent of those employed commuted to Shawnee, Tecumseh, Oklahoma City, and Seminole.