Located in Bergen County, New Jersey, Allendale boasts that its main street "looks like a Norman Rockwell painting," which helps define its much sought after small-town atmosphere. It is located in the very northeast of New Jersey near the New York state border.

Allendale is home to several parks, including Crestwood Park, which offers a lake for fishing and boating, sports fields, and a playground, and the Celery Farm, which has over 100 acres and is "one of the most unique bird sanctuaries in the state."

Allendale's downtown area has a limited number of charming shops and restaurants. The community is active and often gathers for events such as the annual Fourth of July celebration and the Allendale Festival Day. With its proximity to New York City, Allendale is a favored spot for commuters seeking a quieter lifestyle away from the hustle and bustle of their working life in the city. The borough has a strong public school system that serves as a draw for families.