Resident Population in Wabash County, IN was 30.77700 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Wabash County, IN reached a record high of 36.64000 in January of 1980 and a record low of 30.76200 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Wabash County, IN - last updated from the United States Federal Reserve on April of 2026.