Resident Population in Seward County, KS was 21.06700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Seward County, KS reached a record high of 23.35800 in January of 2012 and a record low of 15.74400 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Seward County, KS - last updated from the United States Federal Reserve on May of 2024.