Erin is a city located in Houston County Tennessee. It is also the county seat of Houston County. With a 2020 population of 1,260, it is the 219th largest city in Tennessee and the 9373rd largest city in the United States . Erin is currently declining at a rate of -0.79% annually and its population has decreased by -4.83% since the most recent census, which recorded a population of 1,324 in 2010. Erin reached it's highest population of in . Spanning over 4 miles, Erin has a population density of 323 people per square mile.
The average household income in Erin is $44,378 with a poverty rate of 22.54%. The median rental costs in recent years comes to $583 per month, and the median house value is $82,200. The median age in Erin is 45.1 years, 42.1 years for males, and 47.5 years for females.