Mattawa is a very small city located in the state of Washington. With a population of 3,784 people and two associated neighborhoods, Mattawa is the 169th largest community in Washington.

Another important characteristic of Mattawa is that a lot of people work in agricultural jobs, especially compared to most other communities in America, and there are quite a number of farms in town.

Telecommuters are a relatively large percentage of the workforce: 8.69% 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.

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

The population of Mattawa has one of the lowest overall levels of education in the country: only 0.20% of people over 25 hold a college degree. The national average for all municipalities is 21.84%.

The per capita income in Mattawa in 2022 was $14,167, which is low income relative to Washington and the nation. This equates to an annual income of $56,668 for a family of four. Mattawa also has one of the higher rates of people living in poverty in the nation, with 33.27% of its population below the federal poverty line.

Mattawa is an extremely ethnically-diverse city. The people who call Mattawa home describe themselves as belonging to a variety of racial and ethnic groups. People of Hispanic or Latino origin are the most prevalent group in Mattawa, accounting for 99.83% of the city’s residents (people of Hispanic or Latino origin can be of any race). The greatest number of Mattawa residents report their race to be Asian, followed by White. Important ancestries of people in Mattawa include European, Yugoslavian, Other West Indian, West Indian, and U.S. Virgin Islander.

Mattawa also has a high percentage of its population that was born in another country: 51.16%.

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