The courthouse and county seat of Greeley, Colorado, USA. – Peter Romero, CC BY-SA 3.0 – Wikimedia Commons Greeley is located in Weld County. About 108,795 people live here (as of 2020). Between 2010 and 2020, the population grew from 92,889 to 108,795. The region is at 1420 meters above sea level. The area covers about 124.2 square kilometers. There are about 4.904 streets in Greeley. The region was founded in 1869. The postal codes are 80631–80639. The dialing code is 970. The name originates from Horace Greeley (American politician and publisher) Greeley is city in and county seat of Weld County, Colorado, United States. Among other things, Greeley has public Transport, restaurants, cafés, supermarkets, clothing Stores, schools, banks, hairdressers, dentists and pharmacies. More information at greeleygov.com.