Polk County is a county located in the U.S. state of Nebraska. As of the most recent data available, the county has a population of approximately 5,639 people, with a population density of about 12.85 persons per square mile.
The county spans a total land area of 439.00 square miles (1,137.00 square kilometers). The administrative center and county seat is Osceola, which often serves as a hub for local governance and services. The largest city within the county by population is Stromsburg.
Geographically, Polk County experiences varied elevations, with its highest point at Polk 1,740 ft and its lowest point at Shelby 1,637 ft. The region operates in the UTC-6.