Question: Northern Valley, New Jersey an area contained within Bergen County, contains how many municipalities directly across from the George Washington Bridge from Manhattan?

Context paragraphs:
Hackensack Township, New Jersey: Hackensack Township was a township that was formed in 1693 within Bergen County, New Jersey, United States.  The township was created by the New Jersey Legislature as one of the first group of townships in New Jersey.  Bergen County, which had been created in 1682, was thus split into two parts: Hackensack Township to the north, and Bergen Township to the south.

Pascack Valley: The Pascack Valley is the name for a region of New Jersey, United States, contained within Bergen County.  It is named for the Pascack Brook, which defines the valley.  The region consists of eight municipalities: Montvale, Park Ridge, Woodcliff Lake, Hillsdale, Westwood, River Vale, Washington Township and Emerson.

List of tallest buildings in Fort Lee: Fort Lee, in eastern Bergen County, New Jersey, United States, is a borough situated atop the Hudson Palisades overlooking the Hudson River.  The town is at the northern end of the densely populated Hudson Waterfront, the string of municipalities facing the skyline of Manhattan, to which it is connected via the George Washington Bridge (GWB).  The bridge, built in 1931, at 604 ft meters in height as measured from its base, is the tallest structure in Fort Lee.  The cliffs of the Palisades rise to about 260 ft .  Since the 1960s, numerous residential high-rise buildings have been built along the Palisade Avenue-Boulevard East corridor.  As of March 2014, apart from the bridge itself, there were eight structures over 300 ft tall in Fort Lee.

Interstate 80 in New Jersey: Interstate 80 (I-80) is a major Interstate Highway in the United States, running from the New York City Metropolitan Area westward to San Francisco, California.  The New Jersey Department of Transportation also identifies I-80 as the Christopher Columbus Highway.  I-80 in New Jersey runs 68.54 mi from the Delaware Water Gap Toll Bridge over the Delaware River at the Delaware Water Gap to its eastern terminus at I-95 in Teaneck, Bergen County.  I-95 continues from the end of I-80 to the George Washington Bridge for access to New York City; access is also provided via the I-280 spur towards the Holland Tunnel and US 46 to Route 3, or I-95, towards the Lincoln Tunnel.  Throughout New Jersey, I-80 runs parallel to US 46.  The highway heads through rural areas of Warren and Sussex counties before heading into more suburban surroundings in Morris County.  As the road continues into Passaic and Bergen counties, it heads into more urban areas.

Bergen County, New Jersey: Bergen County is the most populous county in the U.S. state of New Jersey.  As of the 2016 Census estimate, the county's population was 939,151, an increase of 3.8% from the 2010 United States Census, which in turn represented an increase of 20,998 (2.4%) from the 884,118 counted in the 2000 Census.  Located in the northeastern corner of New Jersey and its Gateway Region, Bergen County is part of the New York City Metropolitan Area and is directly across the George Washington Bridge from Manhattan.

Northern Valley, New Jersey: Northern Valley is the name for a region of New Jersey, United States, contained within Bergen County.  The region consists of fifteen municipalities: Alpine, Bergenfield, Closter, Cresskill, Demarest, Dumont, Englewood, Englewood Cliffs, Harrington Park, Haworth, Northvale, Norwood, Old Tappan, Rockleigh, and Tenafly.

New Jersey Turnpike: The New Jersey Turnpike (NJTP), colloquially known to New Jerseyans as "the Turnpike", is a toll road in New Jersey, maintained by the New Jersey Turnpike Authority.  According to the International Bridge, Tunnel and Turnpike Association, the Turnpike is the nation's sixth-busiest toll road and is one of the most heavily traveled highways in the United States.  Having a total length of 122.40 mi , the Turnpike's southern terminus begins at Interstate 295 (I-295) near the border of Pennsville and Carneys Point Townships in Salem County, one mile east of the Delaware Memorial Bridge.  Its northern terminus is located at the George Washington Bridge in Fort Lee, Bergen County.  The Turnpike is a major thoroughfare providing access to various localities in New Jersey, as well as Delaware, Pennsylvania, and New York.  The route divides into four roadways between exit 6 and exit 14, with the inner lanes restricted to carrying only cars, and with the outer lanes for cars, trucks and buses.

Northern Valley Regional High School at Demarest: Northern Valley Regional High School at Demarest is a comprehensive four-year public high school serving students from several municipalities in Bergen County, New Jersey, United States.  The high school serves students from the suburban communities of Closter, Demarest and Haworth.  The school is one of two high schools that are part of the Northern Valley Regional High School District, the other being Northern Valley Regional High School at Old Tappan, which serves students Harrington Park, Northvale, Norwood and Old Tappan, along with students from Rockleigh, who attend as part of a sending/receiving relationship.

U.S. Route 9 in New Jersey: U.S. Route 9 (US 9) is a U.S. highway in the northeast United States, running from Laurel, Delaware north to Champlain, New York.  In New Jersey, the route runs 166.80 mi from the Cape May–Lewes Ferry terminal in North Cape May, Cape May County, where the ferry carries US 9 across the Delaware Bay to Lewes, Delaware, north to the George Washington Bridge in Fort Lee, Bergen County, where the route along with Interstate 95 (I-95) and US 1 continue into New York City.  US 9 is the longest U.S. highway in the state.  From North Cape May north to Toms River in Ocean County, US 9 is mostly a two-lane undivided road that closely parallels the Garden State Parkway and runs near the Jersey Shore.  Along this stretch, it passes through the communities of Rio Grande, Cape May Court House, Somers Point, Pleasantville, Absecon, Tuckerton, Manahawkin, and Beachwood.  In the Toms River area, US 9 runs along the Garden State Parkway for a short distance before heading northwest away from it and the Jersey Shore into Lakewood Township.  Upon entering Monmouth County, the route transitions into a multilane suburban divided highway and continues through Howell Township, Freehold Township, Manalapan Township, Marlboro Township, Old Bridge Township, Sayreville, and South Amboy.  In Woodbridge Township, US 9 merges with US 1 and the two routes continue through northern New Jersey as US 1/9 to the George Washington Bridge.

Ridgefield Township, New Jersey: Ridgefield Township was a township that existed in Bergen County, New Jersey.  The township was created in 1871, when Hackensack Township was trisected to form Palisades Township in the northernmost third, Englewood Township in the central strip and Ridgefield Township encompassing the southernmost portion, stretching from the Hudson River on the east to the Hackensack River, with Hudson County to the south.  Much of the area had been during the colonial area known as the English Neighborhood.  As described in the 1882 book, "History of Bergen and Passaic counties, New Jersey," "Ridgefield is the first township in Bergen County which the traveler enters in passing up the Palisades.  His first impressions are much like those of old Hendrick Hudson in speaking of a wider extent of country: "A very good land to fall in with, and a pleasant land to see."  The valley of the Hackensack invited early settlers in the seventeenth century, and the valley of the Overpeck Creek, a navigable arm of the Hackensack, also attracted settlers quite as early in this direction.  Sloops and schooners can pass up this creek nearly to the northern boundary of the township.  Ridgefield is bounded on the north by Englewood, on the east by the Hudson, on the south by Hudson County, and on the west by the Hackensack River.  The southern boundary is less than two miles in extent, and the northern less than four, and the length of the township from north to south does not exceed four miles.  Bellman's Creek, forming part of the southern boundary, the Hackensack, the Overpeck, the Hudson, with more than a dozen other smaller streams and rivulets, bountifully supply the whole township with water.  From the western border of the Palisades the land descends to the Overpeck, forming a most beautiful valley, with the land again rising to a high ridge midway between the Overpeck and the Hackensack.  From this long ridge, extending far to the north beyond this township, it took its name of Ridgefield. <br><br>The New York, Susquehanna and Western, formerly the Midland Railroad, the Jersey City and Albany Railroad, and the Northern Railway of New Jersey—all running northward through the township— afford ample railroad accommodations.  The Susquehanna enters the township at Bellman's Creek, and the Northern at about one hundred feet south of the creek, and at a point north and east of the Susquehanna.  The Albany road in this locality is not yet constructed, diverging at present from the track of the Susquehanna between Little Ferry and Bogota stations.  It has, however, an independent line projected and now under construction to New York City. <br><br>Early Settlements.  Ridgefield embraces the earliest settlements in the ancient township of Hackensack, antedating even the organization of that township in 1693, and of the county of Bergen in 1675.  There seems to have been no town or village compactly built, like the village of Bergen, but there were settlements both of Dutch and English in and about what was subsequently known as English Neighborhood prior to 1675.  The Westervelts, the Zimcrmans, the Bantas, and the Blauvelts, all coming from Holland, settled in the middle of the seventeenth century in that locality.  The ancestors of Jacob P. Westervelt, now of Hackensack Village, with himself, were born in English Neighborhood.  His father was born there in 1776, and was the son of Christopher Westervelt, who was born there certainly as early as 1690, and he was the son of the original ancestor of this family, who came from Holland and settled on Overpeck Creek, within the present limits of Ridgefield township, probably about 1670."

Supporting paragraphs: Northern Valley, New Jersey Bergen County, New Jersey
Answer: fifteen