Hamilton Township, Mercer County, New Jersey
Hamilton Township is a township in Mercer County, New Jersey. About 92,506 people live there (2020–2024 estimate). It covers 39.4 sq mi (102 km²) of land and uses Eastern Time. It has its own local government.
- Population, 2020–2024 estimate
- 92,506 ± 80
- County
- Mercer County
- School district
- Hamilton Township School District
- Land area
- 39.4 sq mi (102 km²)
- Type
- TownshipIts own local government
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $100,771 ± $3,960
- Median home value
- $335,500 ± $7,271
- Water area
- 0.86 sq mi (2.24 km²)
- State
- New Jersey
- Census code (GEOID)
- 3402129310
- Coordinates (central point)
- 40.206266, -74.675274
These coordinates mark a central point for the area, not a street address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.
Cities, towns and communities in Hamilton Township, largest first
- Mercerville (CDP)13,535 people
- Hamilton Square (CDP)11,622 people
- White Horse (CDP)10,507 people
- Yardville (CDP)6,301 people
- Groveville (CDP)3,100 people
These places’ central points lie inside Hamilton Township. A place can reach across the line, and its government, if it has one, can be separate from the township’s.
Bordering areas, nearest first
- Bordentown (city)4.3 mi southwest
- Robbinsville Township4.4 mi east
- Trenton (city)4.8 mi west
- Bordentown Township, Burlington County5.4 mi south
- Chesterfield Township, Burlington County6.1 mi south
- Falls Township, Bucks County, Pennsylvania6.2 mi west
- West Windsor Township6.3 mi northeast
- Lawrence Township6.6 mi north
- Upper Freehold Township, Monmouth County8.5 mi southeast
- North Hanover Township, Burlington County9.3 mi southeast
These towns, townships, cities and boroughs share a boundary with Hamilton Township. Distances are straight lines between central points, not driving distances.
Other townships in Mercer County, largest first
- Ewing Township35,604 people
- Lawrence Township32,313 people
- West Windsor Township30,479 people
- East Windsor Township30,062 people
- Hopewell Township17,595 people
- Robbinsville Township15,641 people
People counts are American Community Survey 2020–2024 5-year estimates. See Mercer County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in Hamilton Township
- Longest day
- 15 hours 2 minutes around June 21
- Shortest day
- 9 hours 18 minutes around December 21
- Earliest sunrise
- 5:28 AM around June 14
- Latest sunrise
- 7:33 AM the day before clocks go back in November
- Earliest sunset
- 4:32 PM around December 8
- Latest sunset
- 8:32 PM around June 27
Clocks go forward an hour on the second Sunday in March and back on the first Sunday in November, so sunrise and sunset jump an hour later in March and an hour earlier in November.
| Day | Sunrise | Sunset | Daylight |
|---|---|---|---|
| Jan 15 | 7:19 AM | 4:57 PM | 9 h 38 min |
| Feb 15 | 6:52 AM | 5:34 PM | 10 h 42 min |
| Mar 15 | 7:10 AM | 7:05 PM | 11 h 55 min |
| Apr 15 | 6:20 AM | 7:37 PM | 13 h 17 min |
| May 15 | 5:43 AM | 8:07 PM | 14 h 24 min |
| Jun 15 | 5:28 AM | 8:29 PM | 15 h 1 min |
| Jul 15 | 5:41 AM | 8:27 PM | 14 h 46 min |
| Aug 15 | 6:09 AM | 7:55 PM | 13 h 46 min |
| Sep 15 | 6:39 AM | 7:07 PM | 12 h 28 min |
| Oct 15 | 7:09 AM | 6:19 PM | 11 h 10 min |
| Nov 15 | 6:44 AM | 4:41 PM | 9 h 57 min |
| Dec 15 | 7:13 AM | 4:33 PM | 9 h 20 min |
Approximate times for a flat horizon at the central point; the days move by a day or so from year to year. Hills and weather can change what you see.
Before using this answer on a form
A township line is not always the line on your mail: a mailing address can name another town or post office, and school districts, ZIP Codes and tax districts follow their own lines. For taxes, voting or permits, check the full address with Mercer County or the local office.
Find the township or town where you are now or find your county.