BROOKLYN - Mayor Michael Bloomberg says tens of thousands of Brooklyn residents were left out of the most recent census count.

Bloomberg says parts of Bay Ridge and Bensonhurst were considered ?vacant? even though many people call the area home.

In a letter addressed to the president of the U.S. Census Bureau, Bloomberg said "This disproportionate concentration of vacancy suggests that some aspect of the census enumeration went awry...with likely processing errors that may have hindered the proper reporting, compilation, and tabulation of census results."

Councilman Vincent Gentile (D-43rd District) says if there's no adjustment in the numbers, Brooklyn could lose federal funding based on the incorrect numbers.

The Department of City Planning says chances are Brooklyn will not be seeing the extra money it would have otherwise gotten.