The favorite choice for the term "Corn on the Cob" is 1 ear, yields of Yellow Sweet Corn (Kernels On Cob, Without Salt, Frozen, Drained, Cooked, Boiled) which has about 14 grams of carbohydrate.
The total carbohyrate, sugar, fiber and estimated net carbs (non-fiber carbs) for a variety of types and serving sizes of Corn on the Cob is shown below.