New Jersey Area Codes
10 active area codes · Newark · Population around 9,506,354
New Jersey has 10 active area codes, serving cities like Newark, Jersey City, and Paterson. Of those, 8 are overlays covering ground another code already covers, which is why local calls there use all ten digits. The newest, 640, has been in service since September 17, 2018. Each code below links to its cities, carriers, timezone, and coverage map.
New Jersey Area Code Map
What area codes does New Jersey have?
- 201OverlayJersey CityEastern Time (ET) · 68 cities · 1,592,084
- 551OverlayJersey CityEastern Time (ET) · 68 cities · 1,592,084
- 609OverlayTrentonEastern Time (ET) · 106 cities · 1,251,379
- 640OverlayTrentonEastern Time (ET) · 106 cities · 1,251,379
- 732OverlayToms RiverEastern Time (ET) · 140 cities · 2,046,001
- 848OverlayToms RiverEastern Time (ET) · 140 cities · 2,047,910
- 856CamdenEastern Time (ET) · 86 cities · 1,235,882
- 862OverlayNewarkEastern Time (ET) · 70 cities · 2,113,600
- 908ElizabethEastern Time (ET) · 86 cities · 1,045,558
- 973OverlayNewarkEastern Time (ET) · 70 cities · 2,113,600
More than one of these codes covers 17 of the 21 counties in New Jersey, and one county is covered by 5 of them. Each card counts the people inside that code's own boundary at the 2020 census. Adding all 10 gives 16,289,477, against the 9,288,994 the same census counts in those counties, because 7,000,483 residents fall inside more than one code.
Which cities are the largest in New Jersey?
How many phone prefixes does New Jersey use?
The area codes in New Jersey hold 5,246 assigned prefixes between them, listed under 88 distinct carrier names. A prefix is the three digits after the area code, and NANPA assigns each one to a single carrier.
Sources: City populations – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). State populations – the same program, Vintage 2025 (CO-EST2025-ALLDATA). Area-code footprint and county populations – 2020 Census Centers of Population, mapped against NANP area code boundaries. The share of each city inside a code is measured the same way, against Census place boundaries from the Census Bureau's TIGERweb service. Area code assignments – NANPA CO Code data. See our data methodology.
Frequently Asked Questions
How many area codes does New Jersey have?
New Jersey has 10 active area codes: 201, 551, 609, 640, 732, 848, 856, 862, 908, 973.
What is the main area code for New Jersey?
Of the 10 area codes in New Jersey, 973 is the oldest one still serving Newark, its largest city. 973 has been in service since June 1, 1997.
What are the largest cities in New Jersey?
The largest cities in New Jersey include Newark, Jersey City, Paterson, Elizabeth, Trenton.
What is the total population of New Jersey?
New Jersey has an estimated total population of 9,506,354 based on US Census PEP 2024 data.
Do I have to dial ten digits in New Jersey?
In the parts of New Jersey covered by an overlay, yes. 8 of the 10 area codes here cover ground another code already covers, and where two codes share an area, local calls need the area code as well as the seven-digit number.
Why does New Jersey have 10 area codes?
They arrived one at a time rather than all at once: 973 has been in service since June 1, 1997. 8 of the 10 are overlays, laid over a code that already covered the same ground instead of splitting its map in two. The most recent is 640, in service since September 17, 2018.
What is the newest area code in New Jersey?
640, in service since September 17, 2018.
Is my county covered by more than one area code in New Jersey?
It may be: more than one area code covers 17 of the 21 counties in New Jersey, and one county there is covered by 5 of them. The table above shows which codes reach each of the largest cities.