Warren County is in Skylands, New Jersey. Warren County is located in two valleys of the Great Appalachian Valley. The first is the Kittatinny Valley, which is in the northern part of the county, and the Lehigh Valley, which borders the southern part of the county.

Map of Warren County (New Jersey)

There are no "cities" in Warren County. The largest municipalities are considered "towns".

• 40.66389-75.159721 Alpha — a suburb of Phillipsburg
• 40.8298-75.07332 Belvidere — the county seat
• 40.8537-74.82493 Hackettstown — a small, historic college town with a quaint, but struggling "Main Street" with lots of hiking and biking paths nearby. Includes 40.9802-74.99684 Blairstown and 40.9103-74.98585 Hope
• 40.7477-75.12286 Harmony Township
• 40.8087-74.99347 Oxford
• 40.692-75.1798 Phillipsburg — an urban town just across the river from Easton, Pennsylvania
• 40.7299-74.9599 Washington (Warren County, New Jersey)

• Route 80 slices right though the Northern portion of Warren County, which is between the Delaware Water Gap to the West and Netcong to the East.
• Route 78 will take you directly to Phillipsburg in the southernmost part of the county.

• The Hackettstown Station is the furthest west that the NJ Transit trains go. There are trains to/from Hackettstown throughout the day. It only goes directly to Hoboken, with connections at Dover or Newark to New York Penn Station

• Martz Transit^{[dead link]} has a stop in the Panther Valley Mall in Allamuchy, Exit 19 on Route 80, on some bus routes that travel from Northeastern Pennsylvania into New York City.

• Delaware Water Gap National Recreation Area (Delaware Water Gap) (http://www.nps.gov/dewa/planyourvisit/directions.htm), ☏ +1 570 828-2253, +1 908 496-4458. Hiking, fishing, camping, canoeing, rafting, tubing. 
• 40.90271-74.958331 Land of Make Believe (Pirate's Cove), 354 Great Meadows Road, Rt. 611 (2 miles south of Route 80, Exit 12), ☏ +1 908 459-9000. 10AM-6PM throughout the summer season. Amusement park designed for parent participation with children. 

Most of Warren County is part of the Warren Hills Viticultural Area, and the county has five active wineries:

• Alba Vineyard
• Brook Hollow Winery
• Four Sisters Winery
• Vacchiano Farm
• Villa Milagro Vineyards

• Emergency Dial 911
• Hackettstown Regional Medical Center^{[dead link]}, 651 Willow Grove Street, Hackettstown, +1 908 852-5100
• Warren Hospital^{[dead link]}, 185 Roseberry Street, Phillipsburg, +1 908 859-6700