Mansfield Township, Warren County, New Jersey
Mansfield Township is a township in Warren County, New Jersey. About 7,778 people live there (2020–2024 estimate). It covers 29.6 sq mi (76.6 km²) of land and uses Eastern Time. It has its own local government.
- Population, 2020–2024 estimate
- 7,778 ± 21
- County
- Warren County
- School districts
- Warren Hills Regional School District7–12 · high schoolMansfield Township School DistrictK–6 · elementary
- Land area
- 29.6 sq mi (76.6 km²)
- Type
- TownshipIts own local government
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $88,845 ± $14,713
- Median home value
- $367,300 ± $30,705
- Water area
- 0.1 sq mi (0.27 km²)
- State
- New Jersey
- Census code (GEOID)
- 3404143320
- Coordinates (central point)
- 40.808461, -74.910234
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 Mansfield Township, largest first
- Beattystown (CDP)4,917 people
- Anderson (CDP)607 people
- Port Murray (CDP)138 people
These places’ central points lie inside Mansfield 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
- Oxford Township4.4 mi west
- Liberty Township4.5 mi north
- Independence Township5.3 mi north
- Hackettstown (town)5.4 mi northeast
- Lebanon Township, Hunterdon County5.7 mi south
- Washington Township6.0 mi southwest
- Washington Township, Morris County6.1 mi east
These towns, townships, cities and boroughs share a boundary with Mansfield Township. Distances are straight lines between central points, not driving distances.
Other townships in Warren County, largest first
- Lopatcong Township9,321 people
- Washington Township6,691 people
- Blairstown Township5,741 people
- Independence Township5,536 people
- Greenwich Township5,512 people
- Allamuchy Township5,427 people
- White Township4,679 people
- Pohatcong Township3,266 people
- Franklin Township2,992 people
- Knowlton Township2,919 people
- Liberty Township2,680 people
- Oxford Township2,665 people
All 16
- Harmony Township2,517 people
- Frelinghuysen Township2,137 people
- Hope Township1,818 people
- Hardwick Township1,423 people
People counts are American Community Survey 2020–2024 5-year estimates. See Warren County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in Mansfield Township
- Longest day
- 15 hours 6 minutes around June 21
- Shortest day
- 9 hours 15 minutes around December 21
- Earliest sunrise
- 5:27 AM around June 14
- Latest sunrise
- 7:35 AM the day before clocks go back in November
- Earliest sunset
- 4:31 PM around December 8
- Latest sunset
- 8:35 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 | 7:21 AM | 4:56 PM | 9 h 35 min |
| Feb 15 | 6:53 AM | 5:34 PM | 10 h 41 min |
| Mar 15 | 7:11 AM | 7:06 PM | 11 h 55 min |
| Apr 15 | 6:21 AM | 7:39 PM | 13 h 18 min |
| May 15 | 5:42 AM | 8:10 PM | 14 h 28 min |
| Jun 15 | 5:27 AM | 8:32 PM | 15 h 5 min |
| Jul 15 | 5:40 AM | 8:29 PM | 14 h 49 min |
| Aug 15 | 6:09 AM | 7:57 PM | 13 h 48 min |
| Sep 15 | 6:40 AM | 7:08 PM | 12 h 28 min |
| Oct 15 | 7:10 AM | 6:19 PM | 11 h 9 min |
| Nov 15 | 6:46 AM | 4:41 PM | 9 h 55 min |
| Dec 15 | 7:16 AM | 4:32 PM | 9 h 16 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 Warren County or the local office.
Find the township or town where you are now or find your county.