Herrin is a medium-sized city located in the state of Illinois. With a population of 12,178 people and three associated neighborhoods, Herrin is the 195th largest community in Illinois. Much of the housing stock in Herrin was built relatively recently. The construction of new real estate can often be taken as an indication that the local Herrin economy is robust, and that jobs or other amenities are attracting an influx of new residents. This seems to be the case in Herrin, where the median household income is $58,501.00.

Telecommuters are a relatively large percentage of the workforce: 8.16% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

The population of Herrin overall has a level of education that is slightly above the US average for all US cities and towns of 21.84%. Of adults 25 and older in Herrin, 23.78% have at least a bachelor's degree.

The per capita income in Herrin in 2022 was $34,201, which is middle income relative to Illinois and the nation. This equates to an annual income of $136,804 for a family of four. However, Herrin contains both very wealthy and poor people as well.

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

The most common language spoken in Herrin is English. Other important languages spoken here include Spanish and Polish.