The Milam County Courthouse in Cameron, Texas, United States. The courthouse was listed on the National Register of Historic Places on December 20, 1977. – Larry D. Moore, CC BY 4.0 – Wikimedia Commons Cameron is located in Milam County. About 5,306 people live here (as of 2020). Between 2010 and 2020, the population declined from 5,552 to 5,306. The region is at 122 meters above sea level. The area covers about 13.5 square kilometers. There are about 351 streets in Cameron. The region was founded in 1846. The postal codes are 76520. The dialing code is 254. Cameron is city in and county seat of Milam County, Texas, United States. Among other things, Cameron has cafés, supermarkets, museums, schools and hairdressers.