Fairfield is a somewhat small city located in the state of Iowa. With a population of 9,464 people and three associated neighborhoods, Fairfield is the 45th largest community in Iowa. Fairfield has a large stock of pre-World War II architecture, making it one of the older and more historic cities in the country.

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

A relatively large number of people in Fairfield telecommute to their jobs. Overall, about 20.57% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. 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.

Residents of the city have the good fortune of having one of the shortest daily commutes compared to the rest of the country. On average, they spend only 12.92 minutes getting to work every day.

Being a small city, Fairfield does not have a public transit system used by locals to get to and from work.

The education level of Fairfield ranks among the highest in the nation. Of the 25-and-older adult population in Fairfield, 49.68% have at least a bachelor's degree. The typical US community has just 21.84% of its adults holding a bachelor's degree or graduate degree.

The per capita income in Fairfield in 2022 was $38,109, which is upper middle income relative to Iowa and the nation. This equates to an annual income of $152,436 for a family of four. However, Fairfield contains both very wealthy and poor people as well.

Fairfield is a very ethnically-diverse city. The people who call Fairfield home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Fairfield residents report their race to be White, followed by Asian. Important ancestries of people in Fairfield include German, Irish, English, Swedish, and Norwegian.

Foreign born people are also an important part of Fairfield's cultural character, accounting for 16.94% of the city’s population.

The most common language spoken in Fairfield is English. Other important languages spoken here include Vietnamese and Langs. of India.