Polk County, NE is situated west from Butler covering 637 square miles with an estimated population size of 4464 people living under jurisdiction of US federal government as per findings reported by US census bureau during the year 2019 after having conducted a national survey across all American states including Polk's slice of this territory located right against northern border closest areas bordering South Dakota state line stretching east-westwardly until easternmost edge cornering Iowa territory along Kirkman city limits. Osceola is Polk's county seat complemented further by townships close by contributing more towards agricultural sector established within these parts thanks largely due to hay producing fields present roundabout also grazing grounds occupied by livestock seen grazing alongside grain sorghum farms doing well partaking in crop production process taking hold along Polk's environment .