Formal:
* Je suis né(e) le 24 juillet 1997. (This is the most formal way to say it, and it translates literally as "I was born on the 24th of July, 1997.")
* Je suis né(e) le vingt-quatre juillet mil neuf cent quatre-vingt-dix-sept. (This is also formal and uses the full written form of the date.)
Informal:
* Je suis né(e) le 24 juillet 1997. (This is the same as the formal version, but it can be used in more informal situations.)
* Je suis né(e) un 24 juillet. (This literally means "I was born on a July 24th," and it emphasizes the day of the month.)
Using the verb "naître":
* Je suis né(e) un 24 juillet 1997. (This means "I was born on a July 24th, 1997" and is more common in informal settings.)
Remember to use the appropriate gender form of "né" (né for male, née for female).