Newark sits on Amtrak's Northeast Corridor, which makes it unusually well connected for a small town. Wilmington is 15 minutes by train and Philadelphia 45 minutes; New York and Washington DC are also accessible with one seat. The station is walkable from downtown.
By car, Interstate 95 runs close by and the town is about 30 minutes from Wilmington and two hours from New York City. The drive from Philadelphia takes around 45 minutes depending on traffic.
Newark has no commercial airport of its own. Philadelphia International (PHL) is the nearest major airport, roughly 45 minutes by car or accessible via Amtrak through Philadelphia 30th Street Station.