Help counting duplicaes in a column but not blanks

Az_

Hello, I want to count duplicates in a column but not count blanks. Any assistance appreciated. Az

This formula works but it counts the blank cells

=COUNTIF([Name (Last, First)]:[Name (Last, First)], [Name (Last, First)]@row)

This formula results in all '1's but doesn't count blanks.

=IF(COUNTIFS([Name (Last, First)]:[Name (Last, First)], [Name (Last, First)]@row, [Name (Last, First)]:[Name (Last, First)], NOT(ISBLANK(@cell))) > 1, 1)

Mark Cronk

=COUNTIFS([Name (Last, First)]:[Name (Last, First)], [Name (Last, First)]@row, [Name (Last, First)]:[Name (Last, First)], NOT(ISBLANK(@cell)))

Mark

Mark Cronk

=COUNTIFS([Name (Last, First)]:[Name (Last, First)], [Name (Last, First)]@row, [Name (Last, First)]:[Name (Last, First)], NOT(ISBLANK(@cell)))

Mark