San Luis is a medium-sized city located in the state of Arizona. With a population of 35,770 people and six associated neighborhoods, San Luis is the 30th largest community in Arizona. There's nothing like the smell of a brand new house, and in San Luis, 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 San Luis, and putting down their money on brand new construction. San Luis’s real estate is, on average, some of the newest in the nation. San Luis does seem to be experiencing an influx of affluent people, because the median household income is $46,747.00.

The citizens of San Luis have a very low rate of college education: just 8.78% of people over 25 have a bachelor's degree or advanced degree, compared to a national average of 21.84% for all cities.

The per capita income in San Luis in 2022 was $16,690, which is low income relative to Arizona and the nation. This equates to an annual income of $66,760 for a family of four. However, San Luis contains both very wealthy and poor people as well.

San Luis is an extremely ethnically-diverse city. The people who call San Luis 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 San Luis, accounting for 94.21% of the city’s residents (people of Hispanic or Latino origin can be of any race). The greatest number of San Luis residents report their race to be White, followed by Black or African-American. Important ancestries of people in San Luis include German, European, Irish, Italian, and English.

In addition, San Luis has a lot of people living here who were born outside of the US (45.09%).

The most common language spoken in San Luis is Spanish. Other important languages spoken here include English and Italian.