Look up a US or Canadian area code
Type an area code, a phone number or a state. Get the state or province, the main cities, the time zone and the overlay codes, and how many businesses 67Leads lists with that area code. Free, no account.
Area code 603: Manchester, New Hampshire
Area code 603 covers Manchester, Nashua and Concord in New Hampshire. Time zone: Eastern (UTC-5, UTC-4 in daylight saving time).
| Area codes | State or province | Main cities | Time zone |
|---|---|---|---|
| 603 | New Hampshire | Manchester, Nashua, Concord | Eastern (UTC-5, UTC-4 in daylight saving time) |
Other New Hampshire codes: all 1 areas in New Hampshire
67Leads lists 495 businesses with a 603 phone number, as of 8 Nov 2026: tree service companies 214, roofing contractors 65, plumbers 65, electricians 53, dentists 43, med spas 31.
New Hampshire: 502 businesses listed
Tree service companies in New Hampshire (228)
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Area codes by state
369 area codes in 254 areas. Codes listed together in one area are overlays: they cover the same places.
Area codes by Canadian province
| Province | Area codes |
|---|---|
| Alberta | 403, 587, 780, 825 |
| British Columbia | 236, 250, 604, 672, 778 |
| Manitoba | 204, 431 |
| New Brunswick | 428, 506 |
| Newfoundland and Labrador | 709 |
| Nova Scotia and Prince Edward Island | 782, 902 |
| Ontario | 226, 249, 289, 343, 365, 416, 437, 519, 548, 613, 647, 705, 807, 905 |
| Quebec | 418, 438, 450, 514, 579, 581, 819, 873 |
| Saskatchewan | 306, 639 |
| Yukon, Northwest Territories and Nunavut | 867 |
Where the table comes from
North American Numbering Plan assignments (NANPA), compiled for 67Leads; recently added overlays may be missing. An area code shows where a number was first assigned, not where its owner is today: mobile numbers move with people. The business counts are live from the 67Leads warehouse, by the area code of each listing's phone number.
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Questions
Type the three digits, or a whole phone number, in the box above. You get the state or province, the main cities it covers, its time zone and any overlay codes.
A second code added to the same area when the first runs out of numbers. Both codes cover the same places, which is why local calls there need all ten digits.
No. 800, 833, 844, 855, 866, 877 and 888 are toll-free codes: the number can ring anywhere in the US or Canada.
Usually. A few areas cross a time zone line, such as 850 in the Florida panhandle or 915 in El Paso; the result names every zone an area spans.
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