El Codigo de Area 603 incluye localidades dentro de NEW HAMPSHIRE.
Las localidades con Codigo de Area 603 mas populares son: 1) Claremont. 2) Meredith. 3) Dunbarton. 4) Bretton Woods. 5) Nashua. 6) Candia. 7) Danbury. 8) Hanover. 9) Madison. 10) Epping.
En la siguiente tabla se muestran las localidades con Codigo de Area 603.
| Localidad | Condado | Estado | Codigo de Area |
|---|---|---|---|
| ALSTEAD | NEW HAMPSHIRE | Codigo 603 | |
| ALTON | NEW HAMPSHIRE | Codigo 603 | |
| ANDOVER | NEW HAMPSHIRE | Codigo 603 | |
| ANTRIM | NEW HAMPSHIRE | Codigo 603 | |
| ASHLAND | NEW HAMPSHIRE | Codigo 603 | |
| BARNSTEAD | NEW HAMPSHIRE | Codigo 603 | |
| BARRINGTON | NEW HAMPSHIRE | Codigo 603 | |
| BARTLETT | NEW HAMPSHIRE | Codigo 603 | |
| BEDFORD | NEW HAMPSHIRE | Codigo 603 | |
| BELMONT | NEW HAMPSHIRE | Codigo 603 | |
| BERLIN | NEW HAMPSHIRE | Codigo 603 | |
| BETHLEHEM | NEW HAMPSHIRE | Codigo 603 | |
| BOSCAWEN | NEW HAMPSHIRE | Codigo 603 | |
| BRADFORD | NEW HAMPSHIRE | Codigo 603 | |
| BRETTON WOODS | NEW HAMPSHIRE | Codigo 603 | |
| BRISTOL | NEW HAMPSHIRE | Codigo 603 | |
| CAMPTON | NEW HAMPSHIRE | Codigo 603 | |
| CANAAN | NEW HAMPSHIRE | Codigo 603 | |
| CANDIA | NEW HAMPSHIRE | Codigo 603 | |
| CANTERBURY | NEW HAMPSHIRE | Codigo 603 | |
| CENTER BARNSTEAD | NEW HAMPSHIRE | Codigo 603 | |
| CENTER HARBOR | NEW HAMPSHIRE | Codigo 603 | |
| CENTER OSSIPEE | NEW HAMPSHIRE | Codigo 603 | |
| CENTER SANDWICH | NEW HAMPSHIRE | Codigo 603 | |
| CHARLESTOWN | NEW HAMPSHIRE | Codigo 603 | |
| CHATHAM | NEW HAMPSHIRE | Codigo 603 | |
| CHESTER | NEW HAMPSHIRE | Codigo 603 | |
| CHICHESTER | NEW HAMPSHIRE | Codigo 603 | |
| CLAREMONT | NEW HAMPSHIRE | Codigo 603 | |
| COLEBROOK | NEW HAMPSHIRE | Codigo 603 | |
| CONCORD | NEW HAMPSHIRE | Codigo 603 | |
| CONTOOCOOK | NEW HAMPSHIRE | Codigo 603 | |
| CONWAY | NEW HAMPSHIRE | Codigo 603 | |
| DANBURY | NEW HAMPSHIRE | Codigo 603 | |
| DEERFIELD | NEW HAMPSHIRE | Codigo 603 | |
| DERRY | NEW HAMPSHIRE | Codigo 603 | |
| DIXVILLE NOTCH | NEW HAMPSHIRE | Codigo 603 | |
| DOVER | NEW HAMPSHIRE | Codigo 603 | |
| DUBLIN | NEW HAMPSHIRE | Codigo 603 | |
| DUNBARTON | NEW HAMPSHIRE | Codigo 603 | |
| DURHAM | NEW HAMPSHIRE | Codigo 603 | |
| EAST CONWAY | NEW HAMPSHIRE | Codigo 603 | |
| ENFIELD | NEW HAMPSHIRE | Codigo 603 | |
| EPPING | NEW HAMPSHIRE | Codigo 603 | |
| EPSOM | NEW HAMPSHIRE | Codigo 603 | |
| ERROL | NEW HAMPSHIRE | Codigo 603 | |
| EXETER | NEW HAMPSHIRE | Codigo 603 | |
| FARMINGTON | NEW HAMPSHIRE | Codigo 603 | |
| FITZWILLIAM | NEW HAMPSHIRE | Codigo 603 | |
| FRANCONIA | NEW HAMPSHIRE | Codigo 603 | |
| FRANKLIN | NEW HAMPSHIRE | Codigo 603 | |
| GILMANTON IRON WORKS | NEW HAMPSHIRE | Codigo 603 | |
| GOFFSTOWN | NEW HAMPSHIRE | Codigo 603 | |
| GORHAM | NEW HAMPSHIRE | Codigo 603 | |
| GREENFIELD | NEW HAMPSHIRE | Codigo 603 | |
| GREENVILLE | NEW HAMPSHIRE | Codigo 603 | |
| GROVETON | NEW HAMPSHIRE | Codigo 603 | |
| HAMPSTEAD | NEW HAMPSHIRE | Codigo 603 | |
| HAMPTON | NEW HAMPSHIRE | Codigo 603 | |
| HANCOCK | NEW HAMPSHIRE | Codigo 603 | |
| HANOVER | NEW HAMPSHIRE | Codigo 603 | |
| HARRISVILLE | NEW HAMPSHIRE | Codigo 603 | |
| HENNIKER | NEW HAMPSHIRE | Codigo 603 | |
| HILLSBORO | NEW HAMPSHIRE | Codigo 603 | |
| HILLSBORO UPPER VILLAGE | NEW HAMPSHIRE | Codigo 603 | |
| HINSDALE | NEW HAMPSHIRE | Codigo 603 | |
| HOLLIS | NEW HAMPSHIRE | Codigo 603 | |
| JACKSON | NEW HAMPSHIRE | Codigo 603 | |
| JAFFREY | NEW HAMPSHIRE | Codigo 603 | |
| JEFFERSON | NEW HAMPSHIRE | Codigo 603 | |
| KEENE | NEW HAMPSHIRE | Codigo 603 | |
| KINGSTON | NEW HAMPSHIRE | Codigo 603 | |
| LACONIA | NEW HAMPSHIRE | Codigo 603 | |
| LANCASTER | NEW HAMPSHIRE | Codigo 603 | |
| LEBANON | NEW HAMPSHIRE | Codigo 603 | |
| LISBON | NEW HAMPSHIRE | Codigo 603 | |
| LITTLETON | NEW HAMPSHIRE | Codigo 603 | |
| LYME | NEW HAMPSHIRE | Codigo 603 | |
| MADISON | NEW HAMPSHIRE | Codigo 603 | |
| MANCHESTER | NEW HAMPSHIRE | Codigo 603 | |
| MARLBOROUGH | NEW HAMPSHIRE | Codigo 603 | |
| MARLOW | NEW HAMPSHIRE | Codigo 603 | |
| MELVIN VILLAGE | NEW HAMPSHIRE | Codigo 603 | |
| MEREDITH | NEW HAMPSHIRE | Codigo 603 | |
| MERIDEN | NEW HAMPSHIRE | Codigo 603 | |
| MERRIMACK | NEW HAMPSHIRE | Codigo 603 | |
| MILAN | NEW HAMPSHIRE | Codigo 603 | |
| MILFORD | NEW HAMPSHIRE | Codigo 603 | |
| MILTON | NEW HAMPSHIRE | Codigo 603 | |
| MILTON MILLS | NEW HAMPSHIRE | Codigo 603 | |
| MONROE | NEW HAMPSHIRE | Codigo 603 | |
| NASHUA | NEW HAMPSHIRE | Codigo 603 | |
| NEW BOSTON | NEW HAMPSHIRE | Codigo 603 | |
| NEW DURHAM | NEW HAMPSHIRE | Codigo 603 | |
| NEW LONDON | NEW HAMPSHIRE | Codigo 603 | |
| NEWMARKET | NEW HAMPSHIRE | Codigo 603 | |
| NEWPORT | NEW HAMPSHIRE | Codigo 603 | |
| NORTH CONWAY | NEW HAMPSHIRE | Codigo 603 | |
| NORTH STRATFORD | NEW HAMPSHIRE | Codigo 603 | |
| NORTH WALPOLE | NEW HAMPSHIRE | Codigo 603 |