ニュージャージー州ミドルセックス郡の郡道一覧

以下は、アメリカ合衆国ニュージャージー州ミドルセックス郡の郡道の一覧です。ニュージャージー州全体の郡道システム（その歴史を含む）の詳細については、「ニュージャージー州の郡道」をご覧ください。

500番台の郡道

下記にリストされている路線に加えて、以下の500番台の郡道路線がミドルセックス郡を運行しています。^{[ 1 ]}

↑"500 Series Routes straight line diagram"(PDF). New Jersey Department of Transportation. Archived from the original(PDF) on February 6, 2013. Retrieved May 23, 2012.
↑Middlesex County New Jersey Street & Road Map (Map). Middlesex County Board of Chosen Freeholders. 2006.
1 2"Middlesex County straight line diagram"(PDF). New Jersey Department of Transportation. March 2019. Archived from the original(PDF) on July 30, 2017. Retrieved September 8, 2019.
↑"County Routes by Municipality". Somerset County, New Jersey. Retrieved September 5, 2019.
↑"County Route 620 Straight Line Diagram"(PDF). NJDOT. Archived from the original(PDF) on March 3, 2016. Retrieved September 8, 2019.
↑"ADOPTED RESOLUTION: 13-2307-R". Clerk of the Middlesex County Board of Chosen Freeholders. December 30, 2013. Archived from the original on January 6, 2017. Retrieved August 23, 2016. Maurer Road, also known as CR 654, in the City of Perth Amboy, State of New Jersey, shall be vacated from public use from the easterly line of Amboy Avenue to the westerly line of State Street, or any portion thereof, as shown on the City of Perth Amboy approved Tax Map Sheets 81 and 82 Dated May 16, 1988. The roadway measures 2,640 feet in length and 24 feet in width.