Four corn hybrid types at three plant densities and two nitrogen rates were evaluated for forage yield, forage quality and ensilage quality. The four hybrid types included nutri-dense, waxy, leafy, and dual-purpose; while the three target plant densities were 54 000, 68 000, and 81 000 plants ha^-1; and the nitrogen rates were 134 and 224 kg ha^-1. The dual-purpose hybrid consistently had high forage yields compared with the other types. When averaged over nitrogen rate, plant density had no effect on grain yield for the dual-purpose and nutri-dense hybrids. Across all hybrids nitrogen had no effect on forage yield when averaged across plant density. The leafy hybrid had a lower harvest index than other hybrid types indicating that leaves accounted for much of the harvested weight. Hybrids were examined both at harvest (green chop) and after ensiling for protein and digestibility. Higher nitrogen rates and ensiling increased crude protein when averaged over all hybrids and plant densities. Data for 2003 indicated neither plant density, nor nitrogen affected acid detergent fiber (ADF) or neutral detergent fiber (NDF); while the nutri-dense and leafy hybrids had the highest ADF and NDF values.