Green’s Dictionary of Slang

(US) a derog. nickname for New York City.

1984		J. Jackson in Wash. Post 13 Feb. in Bruns Jesse Jackson (2005) 77: Israel. Every time you go to Hymietown, that’s all they want to talk about.
1989		H. Rawson Dict. of Invective (1991) 205: Also in the compound, Hymietown, i.e., New York City.
1994		N. McCall Makes Me Wanna Holler (1995) 361: Jesse Jackson had referred to [...] New York as ‘Hymietown.’.
2006		S.L. Beeber Heebie-Jeebies at CBGB’s 8: They reigned as gods on that island where they had been born, raised, and nurtured, that city that had formed them, Hymietown.