Sheridan is a city in northwest Worth County, Missouri, United States, near the Platte River.The Platte River flows past one-half mile to the east.[6] According to the United States Census Bureau, the city has a total area of 0.19 square miles (0.49 km2), all land.43.9% of all households were made up of individuals, and 24.5% had someone living alone who was 65 years of age or older.About 4.4% of families and 13.5% of the population were below the poverty line, including 6.1% of those under the age of eighteen and 14.5% of those 65 or over.