Decennial census data.

The average populations in the 2010 decennial census for each Gulf Coast State, rounded to the nearest whole number, are: (a) For the Alabama Coastal Counties, 297,629 persons; (b) For the Florida Coastal Counties, 252,459 persons; (c) For the Louisiana Coastal Parishes, 133,633 persons; (d) For the Mississippi Coastal Counties,123,567 persons; and (e) For the Texas Coastal Counties, 147,845 persons.