Active Prefixes in Area Code 640

- 640-900
- Somers Pt, New Jersey
- 640-200
- Florence, New Jersey
- 640-976
- Xxxxxxxxxx, New Jersey
- 640-222
- Florence, New Jersey
- 640-888
- Atlntic Cy, New Jersey
- 640-444
- Atlntic Cy, New Jersey
- 640-666
- Barnegat, New Jersey
- 640-500
- Mays Ldg, New Jersey
- 640-333
- Beachhaven, New Jersey
- 640-777
- Allentown, New Jersey
- 640-400
- Seais City, New Jersey
- 640-600
- Medford, New Jersey
- 640-999
- New Egypt, New Jersey
- 640-300
- Milmay, New Jersey
- 640-529
- Mountholly, New Jersey
- 640-837
- Capmaycths, New Jersey
- 640-800
- Tuckahoe, New Jersey