47,00 is the recorded population; however, the island has lost many residents due to more factions than Ike.
It still isn't Long Island, which th OP was referring.
I am aware it is not Long Island...I live right down the road a ways from Galveston and have lived here for nearly 34 years. Our family has a rich history with Galveston going way back. My great-grandfather survived the Great Storm! I just looked up the stats online and that's the population number that Galveston has listed online as of that date which is actually a very slight increase from January, 2011.