San Juan is a medium-sized city located in the state of Texas. With a population of 37,341 people and nine associated neighborhoods, San Juan is the 95th largest community in Texas. There's nothing like the smell of a brand new house, and in San Juan, 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 Juan, and putting down their money on brand new construction. San Juan’s real estate is, on average, some of the newest in the nation. San Juan does seem to be experiencing an influx of affluent people, because the median household income is $53,440.00.

San Juan is a decent-sized city, yet no one gets to work using public transit, because the city has no real transit system.

The citizens of San Juan are slightly less educated than the national average of 21.84% for the average city or town: 14.43% of adults in San Juan have a bachelor's degree or advanced degree

The per capita income in San Juan in 2022 was $18,765, which is low income relative to Texas and the nation. This equates to an annual income of $75,060 for a family of four. However, San Juan contains both very wealthy and poor people as well.

San Juan is an extremely ethnically-diverse city. The people who call San Juan 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 Juan, accounting for 96.68% of the city’s residents (people of Hispanic or Latino origin can be of any race). The greatest number of San Juan residents report their race to be White, followed by Asian. Important ancestries of people in San Juan include German, English, Swedish, Scots-Irish, and Brazilian.

San Juan also has a high percentage of its population that was born in another country: 25.95%.

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