[24][25] In 1774, during the run-up to the American Revolutionary War, the small community on the Cohansey River was the site of the Greenwich Tea Party, in which a load of tea meant to be sent overland into Philadelphia, Pennsylvania, was torched in the night.

[26][27] After the Revolutionary War, the pronunciation of the town was changed to Green-witch to differentiate itself from its English namesake.

[28][29] Unincorporated communities, localities and place names located partially or completely within the township include Bacons Neck, Bayside, Caviar, Davis Mills, Greenwich, Othello, Sheppards Mill, Springtown and Stathams Neck.

[30] The 2010 United States census counted 804 people, 336 households, and 229 families in the township.

Of all households, 26.5% were made up of individuals and 10.7% had someone living alone who was 65 years of age or older.

[44] As of the 2000 United States census[15] there were 847 people, 326 households, and 245 families residing in the township.

21.8% of all households were made up of individuals, and 10.1% had someone living alone who was 65 years of age or older.

[3][47][48][49][50][51] In January 2013, Dan Orr was selected by the Township Council from among three candidates offered by the Democratic municipal committee to serve the unexpired term of Bill Kiefer, who resigned from office earlier that month.

[55] For the 119th United States Congress, New Jersey's 2nd congressional district is represented by Jeff Van Drew (R, Dennis Township).

[57] For the 2024-2025 session, the 3rd legislative district of the New Jersey Legislature is represented in the State Senate by John Burzichelli (D, Paulsboro) and in the General Assembly by David Bailey (D, Woodstown) and Heather Simmons (D, Glassboro).

[59] As of 2025[update], members of the Cumberland County Board of County Commissioners (with party affiliation, residence and term-end year listed in parentheses) are: Douglas A. Albrecht (R, Vineland, 2025),[60] Deputy Director Antonio Romero (R, Vineland, 2027),[61] Sandra Taylor (R, Downe Township; 2026),[62] Victoria Groetsch-Lods (R, Vineland, 2025),[63] Arthur Marchand (R, Hopewell Township, 2026),[64] James Sauro (R, Vineland, 2026)[65] and Robert A. Austino (D, Bridgeton, 2027).

[79][80] In the 2008 presidential election, Democrat Barack Obama received 50.4% of the vote (227 cast), ahead of Republican John McCain, who received 48.0% (216 votes), with 450 ballots cast among the township's 605 registered voters, for a turnout of 74.4%.

[81] In the 2004 presidential election, Republican George W. Bush received 50.3% of the vote (233 ballots cast), outpolling Democrat John Kerry, who received around 48.4% (224 votes), with 463 ballots cast among the township's 600 registered voters, for a turnout percentage of 77.2.

[103] No Interstate, U.S., state or significant county highways serve Greenwich Township.

[104][105] People who were born in, residents of, or otherwise closely associated with Greenwich Township include: