Q4 and Q51 buses

q4 rush
q51 ltd
Merrick Boulevard−Linden Boulevard
Q4: Jamaica−St. Albans−Cambria Heights
Q51: Cambria Heights-Ozone Park
A 2019 NFI XD40 (7771) on the Q4 Rush exiting Jamaica Center and a 2023 Nova LFS (8977) on the Q51 Limited at its western terminal in Ozone Park.
Overview
SystemMTA Regional Bus Operations
OperatorNew York City Transit Authority (Q4)
MTA Bus Company (Q51)
GarageJamaica Depot (Q4)
Baisley Park Depot (Q51)
VehicleNova Bus LFS
New Flyer Xcelsior XD40 (Q4 only)
Route
LocaleQueens, New York, U.S.
Communities servedJamaica, South Jamaica, St. Albans, Cambria Heights, Ozone Park
StartQ4: Jamaica Center – Parsons/Archer Bus Terminal – Bay C
Q51: Ozone Park – Rockaway Boulevard station
ViaMerrick Boulevard, Linden Boulevard
EndCambria Heights – 235th Street (Q4)
Cambria Heights – Springfield Boulevard (Q51)
Length5.0 miles (8.0 km) (Q4)
5.7 miles (9.2 km) (Q51)
Other routesQ5 Merrick Boulevard
Q84 Merrick Blvd/120th Avenue
Q85/Q89 Merrick/Conduit Blvds
Q86/Q87 Merrick Boulevard
Service
Operates24 hours (Q4);
4:20 a.m. to 10:40 p.m. (Q51)
Annual patronage630,248 (2024)
TransfersYes
TimetableQ4 Q51
← Q3
Q50
 {{{system_nav}}}  Q5
Q52 SBS →

The Q4 and Q51 bus routes constitute a public transit corridor running along Merrick Boulevard and the easternmost portion of Linden Boulevard in southeastern Queens, New York City. The Q4 runs from the Jamaica Center–Parsons/Archer station to Cambria Heights near the Queens–Nassau County border. The Q51 runs from the Rockaway Boulevard station in Ozone Park to Springfield Boulevard in Cambria Heights; the two routes share Linden Boulevard between Merrick Boulevard and Springfield Boulevard. The Q4 is operated by MTA Regional Bus Operations under the New York City Transit brand. The Q51 is operated by MTA Bus Company.

What is now the Q4 began service in November 1919, running from Jamaica to 201st Street in St. Albans. The franchise was extended to 223rd Street in Cambria Heights in 1931. The Q4 was originally operated by Bee-Line Incorporated and later the North Shore Bus Company until 1947. The Jamaica terminal has been changed several times throughout the route's history. The Q51 began service in 2025.