AlegsaOnline.com Home Municipalities Wamego, Kansas Wamego, Kansas — Pottawatomie County city on the Kansas River Learn about Wamego, a Pottawatomie County city on the Kansas River in northeastern Kansas, home to about 4,700 residents; covers history, geography, demographics, and local attractions. Author: Leandro Alegsa Creation date: November 13, 2022 Last updated: April 10, 2026 Contents Geography en.wikipedia.org · CC0 Wamego is a city in Pottawatomie County, Kansas, United States. The population was 4,372 at the 2010 census, and a 2016 estimate placed the number of residents at 4,715. Geography The Kansas River flows along the southern edge of the city, forming part of Wamego’s southern boundary.