Seymour is a city located in Wayne County, Iowa. Seymour has a 2026 population of 646. Seymour is currently growing at a rate of 1.25% annually and its population has increased by 1.57% since the most recent census, which recorded a population of 636 in 2020.
The median household income in Seymour is $46,071 with a poverty rate of 13.47%. The median age in Seymour is 44.5 years: 33.3 years for males, and 51.9 years for females. For every 100 females there are 99.3 males.