Young was superb over the course of the campaign and is thoroughly deserving of all the plaudits which are coming his way.
The midfielder earned 57% of the votes after registering three assists in May, including two in the crucial 2-1 win over Crystal Palace at Selhurst Park.
Herrera, who has been equally as impressive this term, finished second with 34% of the vote while Smalling received 9%.
There were calls for Young to be sold last summer following a disappointing string of performances but the 29-year-old has completely turned around his fortunes this term.
Memphis Depay will arrive at United this summer but he faces a challenge to get into the starting XI if Young continues his fine form.