What was the population density of most of the land along the cost of the Gulf of mexico?

Answer 1

~Not as dense as this feeble excuse for a question.
If you want help with your homework, you're going to have to define you inquiry a whole lot better.
Where along which Gulf Coast (as in US? - which state? Central America? - which country? South America? - which country? The coast of Gulf Islands? - which ones?
Got any particular time frame in mind?
How far inland do you consider to be "along" the Coast?
Guess you better hit some books or some other such foolish research tool. Might be quicker for you than posing a coherent question.