Anna is located in Collin County. About 16,896 people live here (as of 2020). Between 2010 and 2025, the population grew from 8,249 to 35,245. The region is at 217 meters above sea level. The area covers about 40.9 square kilometers. There are about 1.001 streets in Anna. The region was founded in 1867. The postal codes are 75409. The dialing code is 972. Anna is city in Collin County, Texas, United States. Among other things, Anna has restaurants, attractions and pharmacies. More information at
www.annatexas.gov.