Smithville is a very small city located in the state of Texas. With a population of 4,130 people and two associated neighborhoods, Smithville is the 447th largest community in Texas.

The citizens of Smithville are slightly better educated than the national average of 21.84% for all cities and towns, with 22.29% of adults in Smithville having a bachelor's degree or advanced degree.

The per capita income in Smithville in 2018 was $40,839, which is wealthy relative to Texas, and upper middle income relative to the rest of the US. This equates to an annual income of $163,356 for a family of four. However, Smithville contains both very wealthy and poor people as well.

Smithville is a very ethnically-diverse city. The people who call Smithville home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Smithville residents report their race to be White, followed by Black or African-American. Smithville also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 15.95% of the city’s residents. Important ancestries of people in Smithville include German, English, Irish, Scottish, and Czech.

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