The station consists of two low-level platforms serving trains heading between Hoboken Terminal and Suffern.

Service at Allendale began on October 19, 1848, when Joseph Mallinson donated some of his land in the area so the Paterson and Ramapo Railroad could build a depot.

The passenger underpass constructed at Allendale was added in 1939 as part of the removal of several at-grade road crossings in the village.

Train service in Allendale dates back to the 1840s, when the New Jersey State Legislature approved the creation of the Paterson and Ramapo Railroad.

This new railroad would go from the city of Paterson in Passaic County to the New York state line in Franklin Township.

In 1844, Joseph Warner Allen, the surveyor for the railroad, submitted a new route through the valley in the area of Hohokus.

While a community began to grow around it, the depot itself fell into disrepair by 1857 and the New York, Lake Erie and Western Railroad abandoned service.

The land was considered quaint and serene; city residents began moving to northern Bergen County for the fresh air and a cheaper cost of living.

In January 1870, the Bergen County Democrat announced the construction of a new hotel with a mansard roof along the main road in Allendale.

Several of his relatives also vacationed there in the summer, as well as William Pitt Shearman, the Commissioner of Accounts of New York City, and Erie treasurer.

As a result of having so many railroad executives and politicians as nearby residents, Allendale station became an express stop, further encouraging people to move there.

[5] A new board and batten depot was built on the east side of the tracks at Allendale in 1870 for $3,000, (equivalent to $72,284 in 2023),[10] and completed in 1872.

James Linkroum, the marshal of Allendale, erected a building near the railroad depot on the east side of the tracks.

The railroad responded to the complaints by moving the depot across the tracks in 1902 and partially refurbishing it at a total cost of $1,100 (equivalent to $38,737 in 2023).

At the beginning of the next year, a joint project of the Erie, the Works Progress Administration and the New Jersey Public Utilities Commissioners built new overpasses to replace the grade crossings and a pedestrian underpass at the Allendale station to replace the closed grade crossings at West Allendale and Park avenues.

[17] In 1982, the station came under the control of New Jersey Transit (NJT), the public agency which had taken over commuter rail in the state from Conrail.

Five years later, NJT installed new low-level platforms at the depot, replacing the sidewalks and curbs and reseeding the lawns.

Allendale station provides three permit parking lots; the first, located around the depot, has 77 spaces that are permit-based during the day.