Effingham is a somewhat small city located in the state of Illinois. With a population of 12,209 people and three associated neighborhoods, Effingham is the 196th largest community in Illinois.

Also of interest is that Effingham has more people living here who work in computers and math than 95% of the places in the US.

Telecommuters are a relatively large percentage of the workforce: 11.17% 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.

Compared to the rest of the country, citizens of Effingham spend much less time in their cars: on average, their commute to work is only 15.07 minutes. This also means that noise and pollution levels in the city are less than they would otherwise be.

The overall education level of Effingham is somewhat higher than in the average US city of 21.84%: 25.55% of adults 25 and older in the city have at least a bachelor's degree.

The per capita income in Effingham in 2022 was $33,472, which is middle income relative to Illinois and the nation. This equates to an annual income of $133,888 for a family of four. However, Effingham contains both very wealthy and poor people as well.

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

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