What County Is Summit, New Jersey In?
Summit is in Union County, New Jersey. About 22,705 people live there (2020–2024 estimate). It uses Eastern Time and covers 5.99 sq mi (15.5 km²) of land. The nearest city or town of 50,000 people or more is Plainfield, 7.4 mi south.
- Population, 2020–2024 estimate
- 22,705 ± 45
- Land area
- 5.99 sq mi (15.5 km²)
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Sun today
- Sunrise and sunset for the year
- Elevation
- 374 ft 114 m, ground height at the central point
- Median household income
- $190,304 ± $34,890
- Median home value
- $994,500 ± $81,474
- Median rent, with utilities
- $2,430 ± $210
- Homes lived in by their owners
- 68.3% ± 4.2 points
- Water area
- 0.05 sq mi (0.13 km²)
- State
- New Jersey
- Census place code
- 3471430
- Coordinates (central point)
- 40.715622, -74.364684
These coordinates mark a central point for the area, not a street address. Population, income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
County boundaries in Summit
For a point close to the city or county boundary, check the address with the office responsible for your form. Check a point on the county map.
Coordinates of Summit
40.715622, -74.364684 is a central point for Summit, not a street address. Convert these coordinates or share a map link.
Elevation in Summit
374 ft (114 m), the USGS ground height at Summit’s central point (3DEP terrain, 1 m grid, NAVD 88). Ground height varies across town. Check elevation at another spot.
Sunrise and sunset in Summit
- Longest day
- 15 hours 6 minutes around June 21
- Shortest day
- 9 hours 16 minutes around December 21
- Earliest sunrise
- 5:25 AM around June 14
- Latest sunrise
- 7:33 AM the day before clocks go back in November
- Earliest sunset
- 4:29 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 | 4:54 PM | 9 h 35 min |
| Feb 15 | 6:51 AM | 5:32 PM | 10 h 41 min |
| Mar 15 | 7:09 AM | 7:04 PM | 11 h 55 min |
| Apr 15 | 6:18 AM | 7:36 PM | 13 h 18 min |
| May 15 | 5:40 AM | 8:07 PM | 14 h 27 min |
| Jun 15 | 5:25 AM | 8:30 PM | 15 h 5 min |
| Jul 15 | 5:39 AM | 8:27 PM | 14 h 48 min |
| Aug 15 | 6:07 AM | 7:55 PM | 13 h 48 min |
| Sep 15 | 6:37 AM | 7:06 PM | 12 h 29 min |
| Oct 15 | 7:08 AM | 6:17 PM | 11 h 9 min |
| Nov 15 | 6:44 AM | 4:39 PM | 9 h 55 min |
| Dec 15 | 7:14 AM | 4:30 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.
Time zones in Summit
Summit uses Eastern Time (America/New_York).
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Eastern TimeAmerica/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
2 ZIP Code areas overlap Summit. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Bordering areas, nearest first
Distances are straight lines between map points.
- Chatham, New Jersey (borough)2.0 mi northwest
- Mountainside, New Jersey (borough)2.4 mi south
- New Providence, New Jersey (borough)2.5 mi southwest
- Short Hills, New Jersey (CDP)2.5 mi northeast
Before using this answer on a form
A city boundary, a CDP and a mailing city can mean different things.
Find the county where you are now, check its ZIP area, or check the time zone where you are.
Areas that only touch the edge
These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.