AMK - Good point. There's nothing "smaller" about the city itself. However, according to the Federal Reserve Bank of St. Louis (FRED), the metro area as a whole falls out of the top 20 metro areas by population.

The San Antonio–New Braunfels metropolitan area has a population of approximately 2.81 million people as of early 2026 estimates. It is currently ranked as the 24th largest metropolitan statistical area (MSA) in the United States and the third largest in Texas, following Dallas-Fort Worth and Greater Houston.

But, San Antonio is fast-growing (as is so much of Texas) and there's a whole lot of land around it.