Proper use of "Esq."

This is not exactly an ethics question, but ...

Is the use of the legal title "Esq." proper for both male and female attorneys ?

Thanks.

either...

2. Abbr. Esq. Used as an honorific usually in its abbreviated form, especially after the name of an attorney or a consular officer: Jane Doe, Esq.; John Doe, Esq.
3. In medieval times, a candidate for knighthood who served a knight as an attendant and a shield bearer.
4. Archaic An English country gentleman; a squire.

Both males and females can use the term Esq. today. It is commonly used for attorneys to show that one is licensed to practice law. You can use "J.D." after your name after you graduate from law school and then "Esq." after you pass the bar. It is like "Dr." for people who have "M.D." degrees.