Dekalb County is a county located in the U.S. state of Missouri. As of the most recent data available, the county has a population of approximately 11,597 people, with a population density of about 27.35 persons per square mile.
The county spans a total land area of 424.00 square miles (1,098.00 square kilometers). The administrative center and county seat is Maysville, which often serves as a hub for local governance and services. The largest city within the county by population is Maysville.
Geographically, Dekalb County experiences varied elevations, with its highest point at Union Star 1,034 ft and its lowest point at Clarksdale 942 ft. The region operates in the UTC-6.