Hamilton Square

Geography

Hamilton Square is in southern Mercer County, east of Trenton, the state capital. The CDP is in the eastern part of Hamilton Township and is bordered to the east by Robbinsville Township. The community of Mercerville borders Hamilton Square to the west. New Jersey Route 33 passes through the center of Hamilton Square, leading west into Trenton and east to U.S. Route 206 and thence Hightstown. U.S. 206 forms the southeast border of the Hamilton Square CDP, while Interstate 195 forms the southern border. According to the United States Census Bureau, Hamilton Square has a total area of 4.367 square miles (11.312 km2), including 4.343 square miles (11.249 km2) of land and 0.024 square miles (0.063 km2) of water (0.56%). The center of the community is on high ground which drains north toward Miry Run and south toward Pond Run, both of which are west-flowing tributaries of Assunpink Creek leading to the Delaware River in Trenton.

Race & ethnicity

Most-observed species

• Northern Cardinal

  Cardinalis cardinalis (Linnaeus, 1758) · Aves
  31,076
• Blue Jay

  Cyanocitta cristata (Linnaeus, 1758) · Aves
  29,974
• American Robin

  Turdus migratorius Linnaeus, 1766 · Aves
  29,910
• Mourning Dove

  Zenaida macroura (Linnaeus, 1758) · Aves
  25,823
• Song Sparrow

  Melospiza melodia (A.Wilson, 1810) · Aves
  25,564
• Canada Goose (canadensis Group)

  Branta canadensis (Linnaeus, 1758) · Aves
  24,880
• Red-bellied Woodpecker

  Melanerpes carolinus (Linnaeus, 1758) · Aves
  23,181
• Carolina Wren

  Thryothorus ludovicianus (Latham, 1790) · Aves
  22,767

Largest nearby schools

• Trenton Central High School - Main Campus
  High · TRENTON · 2,255 students · 14.5:1 ratio
• Hightstown High School
  High · HIGHTSTOWN · 1,644 students · 12.8:1 ratio
• West Windsor-Plainsboro High School South
  High · West Windsor · 1,630 students · 13.3:1 ratio
• Princeton High School
  High · PRINCETON · 1,532 students · 11.8:1 ratio
• Hamilton East - Steinert
  High · HAMILTON · 1,427 students · 13.5:1 ratio
• Hamilton West-Watson
  High · HAMILTON · 1,348 students · 13.6:1 ratio
• Lawrence High School
  High · LAWRENCEVILLE · 1,207 students · 12.3:1 ratio
• Thomas R Grover Middle School
  Middle · West Windsor · 1,197 students · 12.1:1 ratio

Most recent

• M 3 — 2025-08-03
  0 km W of Little Ferry, New Jersey
• M 2.9 — 2024-05-24
  6 km E of Califon, New Jersey
• M 2.6 — 2024-05-01
  1 km NW of Gladstone, New Jersey
• M 2.9 — 2024-04-27
  7 km WSW of Gladstone, New Jersey
• M 2.6 — 2024-04-10
  5 km WSW of Gladstone, New Jersey
• M 3.7 — 2024-04-05
  7 km WSW of Gladstone, New Jersey