I took photo with Canon camera of Old Mill Museum in Lindale, TX. – Billy Hathorn, CC BY 3.0 – Wikimedia Commons Lindale is located in Smith County. About 6,059 people live here (as of 2020). Between 2010 and 2020, the population grew from 4,818 to 6,059. The region is at 168 meters above sea level. The area covers about 16.1 square kilometers. There are about 318 streets in Lindale. The region was founded in 1871. The postal codes are 75771. Lindale is city in Smith County, Texas, United States. Among other things, Lindale has pharmacies. More information at www.lindaletx.gov.