Question: 9th Street–Congress Street is a station on the Light Rail that is located in the county seat of what New Jersey county?

The Downtown Seattle Transit Tunnel (DSTT), also referred to as the Metro Bus Tunnel, is a 1.3 mi pair of public transit tunnels in Seattle, Washington, United States.  The tunnel serves Downtown Seattle, running west under Pine Street from 9th Avenue to 3rd Avenue, and south under 3rd Avenue to South Jackson Street.  It was used only by buses from its opening in 1990 until 2005, and since 2009 it has been shared by buses and light rail.  The double-track tunnel and its stations, except Convention Place, constitute parts of the Central Link light rail line, which continues north to the University of Washington station and south through the Rainier Valley to Seattle–Tacoma International Airport as part of Sound Transit's Link light rail network.  Its five stations are also served by King County Metro and Sound Transit Express buses that leave the tunnel north via Interstate 5, south via the SODO Busway, or east via Interstate 90.  The DSTT is the busiest section of the Link light rail network, with an average of over 10,000 weekday boardings.  It is owned by King County Metro and shared with Sound Transit through a joint-operating agreement signed in 2002.  The Downtown Seattle Transit Tunnel is one of two tunnels in the United States shared by buses and trains, the other being the Mount Washington Transit Tunnel in Pittsburgh, and is the only one in the United States with shared stations. <SEP>  As of the 2010 United States Census, the city's population was 50,005, having grown by 11,428 (+29.6%) from 38,577 counted in the 2000 Census, which had in turn increased by 5,180 (+15.5%) from the 33,397 in the 1990 Census. Hoboken ( ; Unami: "Hupokàn") is a city in Hudson County, New Jersey, United States.  Hoboken is part of the New York metropolitan area and is the site of Hoboken Terminal, a major transportation hub for the region. <SEP>  Located at Ninth Street, west of Jackson Street, in Hoboken, New Jersey, the station also serves the Heights of Jersey City. 9th Street–Congress Street is a station on the Hudson–Bergen Light Rail (HBLR) operated by New Jersey Transit which opened on September 7, 2004.  There are two tracks and two side platforms. <SEP> Bergenline Avenue is a major commercial district in the North Hudson section of Hudson County, New Jersey, United States.  The north-south streets passes through Union City, West New York, Guttenberg, North Bergen.  Its southern end is at Union City's Second Street, the north boundary of Washington Park.  From there north to 47th Street, the street is one-way southbound; New York Avenue and Kennedy Boulevard serve northbound traffic.  Between 48th and 49th Streets, elevators on the west side provide access to the underground Bergenline Avenue station of the Hudson-Bergen Light Rail.  After passing through West New York and Guttenberg and into North Bergen, the street meets North Hudson Park, running along its west side from 79th Street to the Bergen County line through the community of Nungesser's and crosses Kennedy Boulevard.  The northernmost 0.04 mi of the route from Kennedy Boulevard to the Bergen County line is designated as County Route 721.  North of the county line the street name becomes Anderson Avenue, which is the major commercial district for Fairview, Cliffside Park, and Fort Lee.