Jefferson is a very small city located in the state of Iowa. With a population of 4,100 people and two associated neighborhoods, Jefferson is the 115th largest community in Iowa.

Also of interest is that Jefferson 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 Jefferson telecommute to their jobs. Overall, about 7.39% 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.

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, Jefferson has relatively fewer families with younger children, and/or college students. Combined, this makes Jefferson a pretty quiet place to live overall. If you like quiet, you will probably enjoy it here.

The citizens of Jefferson are slightly better educated than the national average of 21.84% for all cities and towns, with 21.74% of adults in Jefferson having a bachelor's degree or advanced degree.

The per capita income in Jefferson in 2022 was $38,198, which is upper middle income relative to Iowa and the nation. This equates to an annual income of $152,792 for a family of four. However, Jefferson contains both very wealthy and poor people as well.

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

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