In a first aspect, a wallpack lighting fixture is provided herein for use with solid state lighting and which is configurable to selectively utilize different quantities, up to a maximum, of solid state lighting modules, allowing for different levels and patterns of light output. In a second aspect, a wallpack lighting fixture is provided herein for use with solid state lighting which includes a main housing and a secondary enclosure removably mountable to the main housing. In a further aspect, a wallpack lighting fixture is provided herein for use with solid state lighting which includes a housing having a wall mountable back panel and a door portion hingeably, and detachably, connected to the back panel.