Avoca should not be confused with Avoca Township, which covered a much larger area than the town itself. This section of the article will cover the entire township, with the remainder the town itself. Avoca township was located in southeastern Pottawatomie County, with Konawa Municipal Township (and the Seminole County line) to the east, St. Louis Township to the north and the South Canadian River to the south. The western boundary was about two and a half miles west of present-day Asher. The township encompassed about 75 square miles. Post offices in the Avoca Township area included:
