The following is a list of county routes in Monmouth 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 the 1937 renumbering of Monmouth County roads, numbers 1 through 5 were reserved for the longer, "cross-county" routes; those numbered 6 and above were to be more local in nature. County Route 1 was designated to run from the Mercer County line via Freehold and Eatontown to the Long Branch city limits. With the establishment of the 500 Series of county routes, CR 1 was superseded by CR 524 from the Mercer County line to Smithburg, and CR 537 from Smithburg to the Long Branch boundary. The present CR 1 was formed when part of CR 3 was separated from the balance of CR 3 with the 1952 establishment of CR 527 as part of the 500 Series routes. Since the CR 1 designation was available, that portion of CR 3 between CR 527 and CR 571 was re-designated as CR 1.^[1]

In addition to those listed below, the following 500-series county routes serve Monmouth County:^[2]

• CR 516, CR 516 Spur, CR 520, CR 522, CR 524, CR 524A, CR 524 Spur, CR 526, CR 526 Spur, CR 527, CR 527A, CR 537, CR 539, CR 547, CR 549, CR 571

Route	Length (mi)[3]	Length (km)	From	Via	To	Notes
CR 1	6.54	10.53	CR 571 in Millstone Township	Perrineville Road, Sweetmans Lane	CR 527 / CR 527A on the Millstone-Manalapan township line
CR 2	2.07	3.33	Route 33 / Oxford Way in Neptune City	6th Avenue, Brinley Avenue	Ocean Avenue (CR 18) in Bradley Beach
CR 3	13.21	21.26	Millhurst Road (CR 527) / Woodward Road in Manalapan	Main Street, Tennent Road, Lloyd Road, Nappi Place	Route 35 in Keyport
CR 3A	1.20	1.93	Baird Road in Millstone Township	Conover Road	Route 33 in Millstone Township	Decommissioned June 1, 1971[4]
CR 4 (1)	1.74	2.80	Boundary Road / Vanderburg Road on the Marlboro-Colts Neck township line	Crine Road	CR 4 (2) in Colts Neck	Formerly extended west to Route 79
CR 4 (2)	9.26	14.90	End of county maintenance along Conover Road in Colts Neck	Conover Road, South Street, Holmdel Road, Main Street, Broad Street	1st Street (CR 6) in Keyport
CR 4A	2.10	3.38	CR 520 in Marlboro	Conover Road	Route 79 in Marlboro	Decommissioned May 25, 1989[5]
CR 5	1.36	2.19	West Sylvania Avenue (Route 35) in Neptune City	Steiner Avenue, Atkins Avenue	Atkins Avenue on the Neptune/Asbury Park line
CR 6 (1)	1.18	1.90	Route 35 in Aberdeen	Amboy Avenue, West Front Street, Front Street	Broad Street (CR 4) / Front Street in Keyport
CR 6 (2)	0.36	0.58	West 4th Street (CR 516) / Broadway in Keyport	Broadway	West Front Street (CR 6 (1)) / Broadway in Keyport
CR 6 (3)	0.91	1.46	1st Street (CR 6 (4)) in Keyport	Stone Road	Route 36 in Union Beach
CR 6 (4)	1.11	1.79	Broad Street (CR 4) in Keyport	1st Street, Broadway	Florence Avenue (CR 39) in Union Beach
CR 6A (1)	1.32	2.12	Cliffwood Road (CR 689) at the Middlesex County line in Aberdeen	Cliffwood Avenue	Route 35 / Cliffwood Avenue in Aberdeen
CR 6A (2)	1.61	2.59	Cliffwood Avenue (CR 6A (1)) in Matawan	Cross Road, Ravine Drive	Main Street (CR 516 Spur) in Matawan
CR 7 (1)	2.81	4.52	Route 35 on the Holmdel-Middletown township line	Palmer Avenue, Main Street, Church Street, Monroe Avenue	Route 36 in Hazlet
CR 7 (2)	0.61	0.98	Main Street (CR 7 (1)) in Keansburg	Port Monmouth Road	Port Monmouth Road / Atlantic Avenue on the Keansburg/Middletown line
CR 8	4.22	6.79	Route 36 / First Avenue in Atlantic Highlands	First Avenue, Ocean Boulevard, Orchard Avenue, Linden Avenue, Waterwich Avenue, Bay Avenue	Route 36 / Highland Avenue / Bay Avenue in Highlands
CR 8A	3.55	5.71	Rumson Road (CR 520) / Tuxedo Road in Rumson	Bingham Avenue, Oceanic Bridge, Locust Point Road, Locust Avenue, Valley Drive East	Route 36 in Atlantic Highlands
CR 8B	1.02	1.64	Valley Drive East (CR 8A) / Monmouth Avenue / Oakdale Run in Middletown	Navesink Avenue	Route 36 / Orchard Street in Middletown
CR 9	5.27	8.48	Monmouth Beach-Long Branch border	Ocean Avenue	Sea Bright-Middletown border in Sandy Hook	Decommissioned October 17, 1972 and replaced with Route 36
CR 10	5.21	8.38	Hubbard Avenue (CR 12) / West Front Street in Middletown	West Front Street, East Front Street, River Road, West River Road, East River Road	Ridge Road (CR 34) in Rumson
CR 11 (1)	0.83	1.34	Broad Street / Pinckney Road (CR 520) in Red Bank	Broad Street	Front Street (CR 10) in Red Bank	Maintained by Red Bank Borough north of Harding Road (CR 34)
CR 11 (2)	3.34	5.38	Port Au Peck Avenue in Oceanport	Oceanport Avenue, Branch Avenue	Harding Road (CR 34) / Hudson Avenue in Red Bank
CR 11 (3)	1.09	1.75	Broadway (CR 547) in West Long Branch	Oceanport Avenue	Port Au Peck Avenue / East Main Street in Oceanport
CR 12	4.19	6.74	Red Hill Road / Van Schoick Road (CR 52) in Holmdel	Dwight Road, Nut Swamp Road, Hubbard Avenue	West Front Street (CR 10) in Middletown
CR 12A	4.40	7.08	Hubbard Avenue (CR 12) / Todd Drive in Middletown	Navesink River Road	Locust Point Road (CR 8A) in Middletown
CR 13	3.06	4.92	Broad Street (Route 35) in Shrewsbury	Shrewsbury Avenue, Rector Place	Route 35 in Red Bank
CR 13A	3.76	6.05	Tinton Avenue (CR 537) / Water Street in Tinton Falls	Sycamore Avenue	Branch Avenue (CR 11) / Willow Drive (CR 13B) in Little Silver
CR 13B (1)	1.09	1.75	Branch Avenue (CR 11) in Little Silver	Willow Drive, Prospect Avenue	Rumson Road (CR 520) / Prospect Avenue in Little Silver
CR 13B (2)	0.30	0.48	Prospect Avenue (CR 13B (1) in Little Silver	Church Street	Rumson Road (CR 520) in Little Silver
CR 14	3.20	5.15	Green Grove Road / West Park Avenue on the Ocean Township-Tinton Falls line	West Park Avenue	Monmouth Road (CR 15) in Ocean Township
CR 15	5.19	8.35	Main Street / Deal Lake Drive (Route 71) in Asbury Park	Main Street, Grassmere Avenue, Westra Street, Monmouth Road, Locust Avenue	Broadway (CR 547) in West Long Branch
CR 16	6.22	10.01	Naval Weapons Station Earle in Colts Neck	Asbury Avenue	Main Street (Route 71) / Asbury Avenue in Asbury Park
CR 17 (1)	1.73	2.78	Route 33 / Jumping Brook Road in Neptune	Old Corlies Avenue	Route 33 in Neptune
CR 17 (2)	3.51	5.65	Old Corlies Avenue (CR 17 (1)) in Neptune	West Bangs Avenue, Bangs Avenue	Bangs Avenue on the Neptune/Asbury Park line
CR 17 (3)	1.39	2.24	Brighton Avenue in Neptune City	West Sylvania Avenue	Route 35 in Neptune City
CR 17 (4)	0.45	0.72	South Riverside Drive / Lakewood Road in Neptune	East End Avenue	West Sylvania Avenue (CR 17 (3)) in Neptune City
CR 17 (5)	0.40	0.64	West Sylvania Avenue (CR 17 (3)) in Neptune City	Neptune Avenue	6th Avenue (CR 2) / Taylor Avenue in Neptune
CR 17 (6)	0.64	1.03	Main Street (Route 71) / Sylvania Avenue in Avon-by-the-Sea	Sylvania Avenue	Ocean Avenue (CR 18) in Avon-by-the-Sea
CR 18 (1)	8.65	13.92	Main Street (CR 524/CR 547) in Howell	Belmar Boulevard, 16th Avenue	Ocean Avenue (CR 18 (3)) in Belmar
CR 18 (2)	0.45	0.72	Route 34 in Wall Township	Megill Road	Belmar Boulevard (CR 18 (1)) in Wall Township
CR 18 (3)	5.63	9.06	1st Avenue (CR 49) / Brown Avenue in Spring Lake	Brown Avenue, Ocean Avenue, Lake Terrace	Main Street (Route 71) in Bradley Beach
CR 19	3.79	6.10	Atlantic Ave (CR 524) in Wall Township	Allenwood Road, Allaire Road	Route 71 in Spring Lake	Decommissioned January 1, 1953 and replaced with CR 524
CR 20	3.08	4.96	Holly Hill Drive on the Wall Township-Brielle line	Old Bridge Road, South Street, Broad Street, North Broad Street, 8th Avenue	7th Avenue (Route 71) on the Sea Girt-Wall Township line
CR 21	8.08	13.00	Squankum-Yellowbrook Road (CR 524A) / Southard Avenue in Howell	Southard Avenue, Manassa Road, Old Tavern Road, Herbertsville Road, Allenwood-Squankum Road, Allenwood-Lakewood Road	Atlantic Avenue (CR 524) / Ramshorn Drive in Wall Township	Gap in route through a portion of Ocean County
CR 22	1.18	1.90	Main Street (CR 527) in Englishtown	Gordons Corner Road	Conmack Lane / Gordons Corner Road in Manalapan
CR 23	3.91	6.29	Jackson Mills Road (CR 638) at the Ocean County line in Freehold Township	Jackson Mills Road	Elton-Adelphia Road (CR 524) / Jackson Mills Road in Freehold Township
CR 23A	0.70	1.13	US 9 in Howell	Wyckoff Mills Road	CR 524 in Howell	Decommissioned November 21, 1967[6]
CR 24	0.62	1.00	US 9 / Business Route 33 ramps / Swan Lake Park Drive in Freehold Township	Manalapan Avenue	West Main Street (CR 537) in Freehold
CR 25 (1)	0.99	1.59	Norwood Avenue / Cedar Avenue (Route 71) / Monmouth University entrance in West Long Branch	Cedar Avenue	Ocean Avenue (CR 57) in Long Branch
CR 25 (2)	1.26	2.03	Cedar Avenue (CR 25 (1)) on the Long Branch-West Long Branch line	Norwood Avenue	Broadway in Long Branch
CR 26	10.01	16.11	Mercer County line in Allentown	Church Street, Waker Avenue, Allentown-Lakewood Road, Trenton-Lakewood Road	Monmouth Road (CR 537) on the Millstone-Jackson township line	Decommissioned January 1, 1953 and replaced with CR 526
CR 27 (1)	4.67	7.52	Monmouth Road (CR 537) / Evergreen Road on the Upper Freehold-Plumsted township line	Holmes Mill Road, Burlington Path Road	Meirs Road/Burlington Path Road in Upper Freehold	Portion east of CR 539 municipally maintained
CR 27 (2)	1.53	2.46	Holmes Mill Road (CR 27 (1)) / Arneytown-Hornerstown Road in Upper Freehold	Arneytown-Hornerstown Road	CR 539 in Upper Freehold
CR 27 (3)	0.41	0.66	Arneytown-Hornerstown Road (CR 27 (2)) in Upper Freehold	Main Street	Monmouth Road (CR 537) on the Upper Freehold-Plumsted township line
CR 28	0.79	1.27	Old York Road at the Mercer County line in Upper Freehold	Old York Road, South Main Street	Yardville-Allentown Road (CR 524) in Allentown
CR 29	2.69	4.33	Monmouth Boulevard (CR 33) in Oceanport	Shrewsbury Avenue, Branchport Avenue, Atlantic Avenue	Ocean Avenue in Long Branch
CR 29A	0.60	0.97	Port Au Peck Avenue in Oceanport	Myrtle Avenue	Monmouth Boulevard / Myrtle Avenue (CR 33) in Oceanport
CR 30 (1)	1.25	2.01	Atlantic Avenue (CR 524) in Wall Township	West 18th Avenue	Route 34 in Wall Township
CR 30 (2)	4.60	7.40	Allenwood Road Wall Township	18th Avenue, Main Street	8th Avenue / Main Street (Route 71) in Belmar	Portion within Lake Como municipally maintained
CR 31	0.88	1.42	Wickapecko Drive on the Interlaken-Ocean Township line	Corlies Avenue	NJ Transit's North Jersey Coast Line crossing in Allenhurst	Decommissioned April 22, 2004[7]
CR 32	2.86	4.60	Route 35 / Industrial Way West in Eatontown	Parker Road, Wall Street	Norwood Avenue (CR 25) on the Long Branch-West Long Branch line	Formerly extended west along Wall Street to the intersection of Route 35 and Route 36
CR 33	3.34	5.38	Rumson Road (CR 520) in Little Silver	Seven Bridges Road, Myrtle Avenue, Monmouth Boulevard, Florence Avenue	Atlantic Avenue (CR 29) / Florence Avenue in Long Branch
CR 34	4.54	7.31	Broad Street (CR 11) / Reckless Place in Red Bank	Harding Road, Ridge Road, Avenue of Two Rivers	Rumson Road (CR 520) / Avenue of Two Rivers in Rumson
CR 35	1.80	2.90	West Main Street (CR 524) in Farmingdale	North Main Street, Colts Neck Road	Route 33 / Colts Neck Road in Howell	Formerly extended north through Naval Weapons Station Earle to Route 34
CR 36	0.82	1.32	Route 36 / Thompson Avenue in Middletown	Thompson Avenue, Ocean Avenue	Bayside Parkway in Middletown
CR 37	1.10	1.77	CR 25 in Long Branch	Brighton Avenue	Ocean Avenue in Long Branch	Decommissioned May 14, 1987[8]
CR 38	3.54	5.70	Green Grove Road / Bowne Road on the Tinton Falls-Ocean Township line	Wayside Road, Shafto Road	Tinton Avenue (CR 537) in Tinton Falls
CR 39	2.20	3.54	Stone Road (CR 6) on the Union Beach-Hazlet line	Florence Avenue, Front Street, Union Avenue	Route 36 / Union Avenue in Union Beach
CR 40	0.70	1.13	Route 35 / Sunset Avenue in Ocean Township	Sunset Avenue	Wickapecko Drive / Sunset Avenue in Ocean Township	Decommissioned April 22, 2004[7]
CR 40A	2.11	3.40	Route 35 in Neptune City	Memorial Drive	Monroe Avenue / Memorial Drive in Asbury Park	Portion north of Springwood Avenue in Asbury Park municipally maintained
CR 41	1.79	2.88	CR 524 in Millstone Township	Clarksburg Road, North Rochdale Avenue	CR 571 in Millstone Township	Two separate segments upon entering and leaving Roosevelt ; Decommissioned 1953 and replaced with CR 571
CR 42	1.05	1.69	Route 35 in Keyport	Maple Place	Green Grove Avenue in Keyport	Decommissioned 1952 and replaced with CR 516
CR 43	1.66	2.67	CR 526 in Upper Freehold	Imlaystown Road, Imlaystown-Hightstown Road	New Canton-Stone Tavern Road (CR 524) / Imlaystown-Hightstown Road in Upper Freehold
CR 44	1.35	2.17	Branchport Avenue in Long Branch	Joline Avenue	Ocean Avenue in Long Branch	Decommissioned October 17, 1972 and replaced with Route 36
CR 45	0.13	0.21	Gravelly Brook Bridge / Church Street in Aberdeen	Church Street	Henry Hudson Trail / Church Street on the Aberdeen-Matawan line
CR 46	4.95	7.97	Broadway (Route 79) in Freehold	Dutch Lane Road	Crine Road (CR 4) / Heulitt Road in Colts Neck
CR 47	1.18	1.90	Allaire Road (CR 524) in Wall Township	Warren Avenue	Railroad Avenue / Warren Avenue on the Spring Lake Heights-Spring Lake line
CR 48	1.67	2.69	Route 70 / Old Bridge Road on the Brielle-Wall Township line	Riverview Drive	Higgins Avenue / Riverview Drive in Brielle
CR 49	1.54	2.48	8th Avenue (CR 20) / Sea Girt Avenue on the Manasquan-Sea Girt line	Sea Girt Avenue, Washington Boulevard, The Crescent, 1st Avenue	Brown Avenue (CR 18) / 1st Avenue in Spring Lake
CR 50	8.19	13.18	CR 537 in Tinton Falls	Swimming River Road, Middletown-Lincroft Road, Church Street, Kings Highway, New Monmouth Road	Cherry Tree Farm Road / New Monmouth Road (CR 516) / Tindall Road in Middletown
CR 51	4.45	7.16	Wyckoff Road (CR 547) / Hope Road on the Tinton Falls-Eatontown line	Hope Road, Hance Avenue	Newman Springs Road (CR 520) on the Tinton Falls-Red Bank line	Portion between CR 537 and CR 13A municipally maintained
CR 52	5.23	8.42	Newman Springs Road (CR 520) on the Holmdel-Middletown township line	Everett Road, Red Hill Road, Van Schoick Road, South Laurel Avenue	Route 35 / Laurel Avenue (CR 516) in Holmdel
CR 53	1.03	1.66	Turkey Swamp Park entrance in Freehold Township	Georgia Road	Jackson Mills Road (CR 23) / Georgia Road in Freehold Township
CR 54	3.82	6.15	Route 34 / Flock Road in Colts Neck	Phalanx Road	Newman Springs Road (CR 520) in Middletown	Portion east of the Swimming River Reservoir Bridge municipally maintained
CR 55	5.50	8.85	Route 9 in Freehold Township	Edinburgh Drive, Halls Mill Road, Kozloski Road	Route 79 / East Freehold Road in Freehold Township[9]
CR 56	0.96	1.54	Church Street (CR 7) / Carr Avenue in Keansburg	Carr Avenue	Beachway Avenue in Keansburg
CR 57	2.21	3.56	Cedar Avenue (CR 25) / Ocean Avenue in Long Branch	Ocean Avenue, Ocean Boulevard	Joline Avenue / Ocean Boulevard (Route 36) in Long Branch

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• The Monmouth County Scenic Roadway Plan, Monmouth County Planning Board, September 17, 2001

• New Jersey Roads - Route Log - Monmouth Log