Question: What is the capital of the county having the capital state of New Jersey?

<P0-S0> Density 1210.10 / sq mi (467 / km) Ranked 1st Median household income $68,357 (7th) Elevation Highest point High Point 1,803 ft (549.6 m) Mean 250 ft (80 m) Lowest point Atlantic Ocean Sea level Before statehood Province of New Jersey Admission to Union December 18, 1787 (3rd) Governor Phil Murphy (D) Lieutenant Governor Sheila Oliver (D) Legislature New Jersey Legislature Upper house Senate Lower house General Assembly U.S. <P0-S1> Senators Bob Menendez (D) Cory Booker (D) U.S. House delegation 7 Democrats 5 Republicans (list) Time zone Eastern: UTC - 5 / - 4 ISO 3166 US - NJ Abbreviations NJ, N.J. Website www.nj.gov <P0-S2> State of New Jersey Flag Seal Nickname (s): The Garden State Motto (s): Liberty and prosperity Official language None Spoken languages English (only) 69.4% Spanish 15.9% Indic 2.7% Chinese 1.5% Korean 1.1% French 0.97% Tagalog 0.94% Portuguese 0.91% Italian 0.83% Arabic 0.76% Polish 0.72% Russian 0.57% Demonym New Jerseyan (official), New Jerseyite Capital Trenton Largest city Newark Largest metro Greater New York Area Ranked 47th Total 8,722.58 sq mi (22,591.38 km) Width 70 miles (112 km) Length 170 miles (273 km)% water 15.7 Latitude 38 ° 56 ′ N to 41 ° 21 ′ N Longitude 73 ° 54 ′ W to 75 ° 34 ′ W Population Ranked 11th Total 9,032,872 (2018 est.) <SEP> <P1-S0> philadelphia served as the capital of the united states both during and immediately after the american revolutionary war. <P1-S1> independence hall, located next door, served as the meeting place of the continental congress until the pennsylvania mutiny in june 1783. the failure of the pennsylvania government to protect congress from a mob of angry mutineers caused the representatives to withdraw to princeton, new jersey. <P1-S2> the national capital then moved to annapolis, maryland in november 1783, then to trenton, new jersey in november 1784 before finally moving to new york city in january 1785. state delegates did not return to independence hall in philadelphia until the united states constitutional convention in 1787; however, remained the official capital even during the convention. <P1-S3> designed by architect samuel lewis, congress hall was originally built to serve as the philadelphia county courthouse; construction began in 1787 and was completed two years later. <SEP> <P2-S0> the province of east jersey, along with the province of west jersey, between 1674 and 1702 in accordance with the quintipartite deed were two distinct political divisions of the province of new jersey, which became the u.s. state of new jersey. <P2-S1> the two provinces were amalgamated in 1702. east jersey's capital was located at perth amboy. <P2-S2> determination of an exact location for a border between west jersey and east jersey was often a matter of dispute. <SEP> <P3-S0> WAEY is a Southern Gospel formatted broadcast radio station licensed to Princeton, West Virginia, serving Princeton and Mercer County, West Virginia. <P3-S1> WAEY is owned and operated by Princeton Broadcasting, Inc. <SEP> <P4-S0> New Jersey's 15th Legislative District is one of 40 in the New Jersey Legislature, covering the Hunterdon County municipalities of East Amwell Township, Lambertville City and West Amwell Township; and the Mercer County municipalities of Ewing Township, Hopewell Borough, Hopewell Township, Lawrence Township, Pennington Borough, Trenton City and West Windsor Township.