Rochester is a very small village located in the state of Illinois. With a population of 3,899 people and two associated neighborhoods, Rochester is the 407th largest community in Illinois. There's nothing like the smell of a brand new house, and in Rochester, you'll find that a large proportion of houses were recently built. New growth in residential real estate is an indication that people are choosing to move to Rochester, and putting down their money on brand new construction. Rochester’s real estate is, on average, some of the newest in the nation. Rochester does seem to be experiencing an influx of affluent people, because the median household income is $107,800.00.

Also of interest is that Rochester 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 Rochester telecommute to their jobs. Overall, about 11.58% 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.

Rochester is a good choice for families with children because of several factors. Many other families with children live here, making it a place where both parents and children are more likely to develop social ties with other families. The village’s good public school district and large population of college-educated adults provide an environment conducive to academic success. Many people own their own single-family homes, providing areas for children to play and stability in the community. Finally, Rochester’s overall crime rate is lower than average for the country.

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

The citizens of Rochester are among the most well-educated in the nation: 49.82% of adults in Rochester have a bachelor's degree or even advanced degree, whereas the average US city has 21.84% holding at least a bachelor's degree.

The per capita income in Rochester in 2022 was $45,025, which is wealthy relative to Illinois and the nation. This equates to an annual income of $180,100 for a family of four.

The people who call Rochester home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Rochester residents report their race to be White, followed by Asian. Important ancestries of people in Rochester include German, English, Irish, Italian, and Polish.

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