Learn more about Sedgwick County, Colorado. Sedgwick County is a charming community in the northeastern corner of Colorado. Population 2,295. Made up of three rural towns, Julesburg, Ovid and Sedgwick. Sedgwick County Economic Development focuses on small business development, workforce development, community togetherness and access to services. We feature an incubator building that fosters 15 local organizations. We foster several business initiatives that promote success within Sedgwick County