Erin is a very small city located in the state of Tennessee. With a population of 1,220 people and two associated neighborhoods, Erin is the 268th largest community in Tennessee.

The city is relatively quiet, having a combination of lower population density and few of those groups of people who have a tendency to be noisy. For example, Erin has relatively fewer families with younger children, and/or college students. Combined, this makes Erin a pretty quiet place to live overall. If you like quiet, you will probably enjoy it here.

As is often the case in a small city, Erin doesn't have a public transportation system that people use for their commute.

In terms of college education, Erin is nearly on par with the US average for all cities of 21.84%: 19.39% of adults 25 and older in Erin have a bachelor's degree or advanced degree.

The per capita income in Erin in 2022 was $30,223, which is middle income relative to Tennessee, and lower middle income relative to the rest of the US. This equates to an annual income of $120,892 for a family of four. However, Erin contains both very wealthy and poor people as well.

Erin is a somewhat ethnically-diverse city. The people who call Erin home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Erin residents report their race to be White, followed by Black or African-American. Important ancestries of people in Erin include English, Irish, German, European, and Scots-Irish.

The most common language spoken in Erin is English. Other important languages spoken here include Spanish and German/Yiddish.