The following is a list of county routes in Sussex County in the U.S. state of New Jersey. For more information on the county route system in New Jersey as a whole, including its history, see County routes in New Jersey.
In addition to those listed below, the following 500-series county routes serve Sussex County:[1]
| Route | Length (mi)[2] | Length (km) | From | Via | To | Notes |
|---|---|---|---|---|---|---|
| 0.59miles | Route 183 in Stanhope | Main Street | Route 183 in Stanhope | Unsigned | ||
| 2.89miles | Route 183 in Stanhope | Brooklyn Road, Willis Avenue, Brooklyn-Stanhope Road | CR 607 in Hopatcong | |||
| 4.59miles | CR 517 in Green Township | Airport Road, Pequest Road, Brighton Road | US 206 in Andover Township | |||
| 2.9miles | CR 604 at the Warren County line in Byram Township | Waterloo Road | US 206 in Byram Township | |||
| 8.51miles | Stanhope line in Hopatcong | Old Stanhope Road, Sparta-Stanhope Road, Stanhope Road | Route 181 in Sparta | |||
| 1.22miles | CR 603 in Green Township | Brighton Road | US 206 in Andover | Partial access only to/from CR 517 (left turns from CR 517 north to CR 606 west and turns from CR 606 east to CR 517 provided via US 206) | ||
| 9.38miles | US 206 in Byram Township | Lackawanna Drive, Maxim Drive, Riverstyx Road, Lakeside Boulevard | CR 602 at the Morris County line in Hopatcong | |||
| 1.88miles | CR 519 in Green Township | Shotwell Road | CR 611 in Green Township | |||
| 2.69miles | CR 607 in Hopatcong | Indian Trail, Lakeside Avenue | Northwood Road at the Morris County line in Hopatcong | |||
| 3.95miles | CR 521 in Stillwater Township | Fredon Road | Route 94 in Fredon Township | |||
| 6.6miles | CR 517 in Green Township | Kennedy Road, Wolf's Corner Road, Springdale Greendell Road | US 206 in Andover Township | |||
| 0.83miles | CR 619 in Stillwater Township | Pond Brook Road | CR 521 in Stillwater Township | |||
| 7.24miles | CR 517 in Andover | Andover-Mohawk Road, East Shore Trail, White Deer Plaza, Mohawk Avenue | Route 181 in Sparta | |||
| 1.47miles | Stillwater Township line in Fredon Township | Paulins Kill Road | Route 94 in Fredon Township | |||
| 0.7miles | NPS Route 615 in Sandyston Township | Sandyston-Flatbrookville Road | CR 640 in Sandyston Township | |||
| 5.09miles | Spring Street in Newton | Sparta Avenue, Newton Sparta Road | CR 517 in Sparta | |||
| 8.99miles | CR 521 in Stillwater Township | Fairview Lake Road, Owassa Road, Mt. Benevolence Road, Mountain Road | CR 521 in Hampton Township | |||
| 2.71miles | Route 94 in Fredon Township | Willows Road, Fredon Springdale Road | US 206 in Andover Township | |||
| 3.69miles | CR 610 in Stillwater Township | East Shore Drive, Swartswood East Side Drive | CR 622 in Hampton Township | |||
| 5.44miles | CR 517 in Sparta | Main Street, Glen Road | Ridge Road at the Morris County line in Sparta | |||
| 0.49miles | US 206 in Newton | Woodside Avenue | CR 616 in Newton | |||
| 5.35miles | CR 521 in Stillwater Township | Newton-Swartswood Road, Swartswood Road | CR 519 in Newton | |||
| 4.38miles | CR 616 in Andover Township | Lawrence Road, Lanterman Road, Sunset Inn Road | Route 15/Route 94 in Lafayette Township | |||
| 3.74miles | CR 521 in Hampton Township | Halsey Road | US 206 in Hampton Township | |||
| 1.56miles | CR 626 in Hampton Township | Branchville Lawson Road | CR 519 / CR 655 in Frankford Township | |||
| 2.85miles | CR 519 in Wantage Township | Branchville-Lewisburg Road | CR 565 / CR 639 in Wantage Township | |||
| 5.54miles | CR 519 in Frankford Township | Wykertown Road, Meyer Road | CR 519 in Wantage Township | |||
| 3.27miles | US 206 in Frankford Township | Old Culvers Union Turnpike, Main Street, Mill Street | US 206 in Frankford Township | |||
| 2.66miles | Route 23 in Franklin | Franklin Avenue, Church Road, Fowler Street, North Church Road | Route 94 in Hardyston Township | |||
| 0.25miles | Route 94 in Hamburg | Wallkill Avenue | Route 23 in Hamburg | Unsigned | ||
| 3.05miles | CR 521 in Hampton Township | Kemah Lake Road | US 206 in Branchville | |||
| 3.77miles | CR 629 in Frankford Township | Haggerty Road | CR 628 in Wantage Township | |||
| 3.29miles | US 206 in Sandyston Township | Upper North Shore Road | CR 519 in Frankford Township | |||
| 2.37miles | CR 565 in Wantage Township | Beemer Church Road | CR 629 in Frankford Township | |||
| 2.37miles | CR 515 in Vernon | Highland Lakes Road | Breakneck Road in Vernon | |||
| 1.43miles | CR 565 / CR 628 in Wantage Township | Loomis Avenue | Route 23 in Sussex | |||
| 1.34miles | CR 615 in Sandyston Township | Bevans Road | CR 560 in Sandyston Township | |||
| 1.24miles | CR 517 in Vernon Township | Drew Mountain Road | CR 565 in Vernon Township | |||
| 2.19miles | Route 284 in Wantage Township | Bassets Bridge Road, Owens Station Road | Lake Wallkill Road in Vernon | |||
| 0.34miles | Route 23 in Sussex | Main Street | Route 23 in Sussex | Unsigned | ||
| 1.41miles | CR 517 in Vernon | Vernon Crossing | Route 94 in Vernon | |||
| 3.85miles | CR 560 in Sandyston Township | Layton-Hainesville Road | US 206 in Sandyston Township | |||
| 1.58miles | Old Mine Road in Sandyston Township | Jager Road | CR 645 in Sandyston Township | |||
| 0.63miles | CR 623 in Lafayette Township | Randazzo Road | CR 669 in Sparta Township | |||
| 1.73miles | CR 519 in Wantage Township | Lusscroft Road | CR 519 in Wantage Township | Decommissioned in 2008[3] | ||
| 12.86miles | US 206/CR 521 in Montague Township | Deckertown Turnpike, Libertyville-Plumbsock Road | Route 23 in Wantage Township | |||
| 4.64miles | Route 23 in Wantage Township | Unionville Road | CR 36 at the New York state line in Wantage Township | |||
| 0.75miles | CR 645 in Sandyston Township | Lertora Road | US 206 in Sandyston Township | |||
| 7.25miles | US 206 in Montague Township | Clove Road | Route 23 in Montague Township | |||
| 0.15miles | CR 645 in Sandyston Township | Towle Road | US 206 in Sandyston Township | |||
| 2.65miles | CR 519 / CR 627 in Frankford Township | Morris Turnpike | CR 630 in Frankford Township | |||
| 0.57miles | US 206 in Sandyston Township | Shaytown Road | CR 675 in Sandyston Township | |||
| 0.17miles | Route 23 in Hamburg | Main Street | Route 94 in Hamburg | Unsigned | ||
| 0.43miles | Route 94 in Lafayette Township | Morris Farm Road | Route 15 in Lafayette Township | Unsigned | ||
| 7.56miles | Route 15 in Lafayette Township | Beaver Run Road | Route 94 in Hardyston Township | |||
| 4.38miles | CR 616 in Newton | Hicks Avenue, Newton Branchville Junction Road, Warbasse Junction Road | Route 94 in Lafayette Township | |||
| 0.66miles | CR 642 in Vernon | Bassetts Bridge Road | Lake Wallkill Road in Vernon | |||
| 2.1miles | CR 565 in Vernon | Lake Wallkill Road | Glen Road West in Vernon | |||
| 7.73miles | US 206 in Andover | Limecrest Road, Houses Corner Road | Route 15 in Sparta | |||
| 1.91miles | CR 605 in Byram Township | Amity Road, Lee Hill Road | CR 613 in Byram Township | |||
| 1.28miles | CR 661 in Hardyston Township | Grumm Road, Blair Road | Route 23 in Wantage Township | |||
| 3.75miles | CR 645 in Sandyston Township | Degroat Road, Cemetery Road, New Road | CR 650 in Montague Township |