Active Prefixes in Area Code 603
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 603-200-#### | Newmarket | Landline Numbers | Comcast Phone Of New... |
| 603-203-#### | Manchester | Wireless Numbers | New Cingular Wireles... |
| 603-204-#### | Nashua | Wireless Numbers | United States Cellul... |
| 603-205-#### | Portsmouth | Wireless Numbers | Omnipoint Miami E Li... |
| 603-206-#### | Manchester | Landline Numbers | Paetec Communication... |
| 603-208-#### | Lyme | Wireless Numbers | United States Cellul... |
| 603-209-#### | Keene | Wireless Numbers | United States Cellul... |
| 603-210-#### | Manchester | Landline Numbers | Comcast Phone Of New... |
| 603-212-#### | Salem | Landline Numbers | No New England Tel O... |
| 603-213-#### | Derry | Landline Numbers | Bell Atlantic Nynex ... |
| 603-214-#### | Errol | Landline Numbers | Freedom Ring Communi... |
| 603-215-#### | Berlin | Landline Numbers | Freedom Ring Communi... |
| 603-216-#### | Manchester | Landline Numbers | Comcast Phone Of New... |
| 603-217-#### | Bristol | Landline Numbers | Rnk, Inc.... |
| 603-218-#### | Manchester | Landline Numbers | Broadview Networks, ... |
| 603-219-#### | Concord | Wireless Numbers | Sprint Spectrum L.p.... |
| 603-221-#### | Nashua | Landline Numbers | No New England Tel O... |
| 603-222-#### | Manchester | Landline Numbers | No New England Tel O... |
| 603-223-#### | Concord | Landline Numbers | No New England Tel O... |
| 603-224-#### | Concord | Landline Numbers | No New England Tel O... |
| 603-225-#### | Concord | Landline Numbers | No New England Tel O... |
| 603-226-#### | Concord | Landline Numbers | No New England Tel O... |
| 603-227-#### | Concord | Landline Numbers | No New England Tel O... |
| 603-228-#### | Concord | Landline Numbers | No New England Tel O... |
| 603-229-#### | Concord | Landline Numbers | No New England Tel O... |
| 603-230-#### | Concord | Landline Numbers | No New England Tel O... |
| 603-231-#### | Derry | Wireless Numbers | Sprint Spectrum L.p.... |
| 603-232-#### | Manchester | Landline Numbers | Comcast Phone Of New... |
| 603-233-#### | Nashua | Wireless Numbers | Omnipoint Miami E Li... |
| 603-234-#### | Derry | Wireless Numbers | Sprint Spectrum L.p.... |
Area Code 603 Introduction
| Area Code: | 603 |
| Country: | United States |
| State/Province: | New Hampshire - NH |
| Major City: | Manchester |
| Time Zone: | Eastern |
| Average property | $256K |
| Average age | 53 y/o |
| Average assets | $60.1K |
| Population density | 9,349 sq mi (24,214 km2) |
| Population | 1,330,608 |
| latitude Longitude: | |
| 42° 42′ N to 45° 18′ N / 70° 36′ W to 72° 33′ W | |
| About 603 : | |
| The 603 Area Code (or Area Code 603) is located in the state of NH. Area Code 603 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 1.44 million unique phone numbers and 5.14 million individuals near the city of Newmarket |
|
| Major cities or places | |
| Derry, NH>Dover, NH>Keene, NH>Manchester, NH>Nashua, NH>Portsmouth, NH>Rochester, NH | |