Texas City Flags

What's the nickname of the state of Texas? Having lived there, I know it's known as the Lone Star state. Of course, you don't need to live there to know that or have learned that.

The five pointed "nautical" star, though, is the symbol for Texas, and studies have shown that by putting either the star or the outline of the state on products you're trying to sell will increase sales by a definite percentage. The Dallas Cowboys logo is the star. One of the original flags, the Burnet Flag, is a solid blue field with a single large white star (it was showcased here a while ago).

So, is it surprising that the three largest cities in Texas use some form of the single, five-pointed star as the dominant image of their city-local flags?

What are the three largest cities?

1. Houston, with a variation of the Burnet Flag:

2. San Antonio, which centers the Alamo in their star, with the field split between red and blue:

3. Dallas, with multiple stars within the star within the city seal within the star, and a horizontal splitting of the red and blue:

To clarify, San Antonio is bigger than Dallas, but not bigger than the Dallas/Ft. Worth metro area. Ft. Worth has its own flag and population though, so I stand by my post.