| Post Office Name | City/State | Address | Phone Number | Action |
|---|---|---|---|---|
| Manor Post Office | New Castle, DE 19720 | 100 Mcmullen Ave | 3023285893 | View Details Get Directions |
| New Castle Post Office | New Castle, DE 19720 | 501 Delaware St | 3023286472 | View Details Get Directions |
| Automated Postal Center | New Castle, DE 19720 | 147 Quigley Blvd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 1 Midfield Rd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 1 W Edinburgh Dr | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 1 Wedgefield Dr | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 100 Schafer Blvd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 100 W Commons Blvd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 101 Johnson Way | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 135 Christiana Rd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 1401 N Dupont Hwy | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 1412 N Dupont Hwy | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 1901 N Dupont Hwy | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 2 Constitution Blvd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 2 Reads Way | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 2 Southgate Blvd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 2062 New Castle Ave | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 287 Christiana Rd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 308 Chestnut St | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 33 Morris Rd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 40 Crippen Dr | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 450 E Basin Rd | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 61 Memorial Dr | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 65 E Edinburgh Dr | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 69 Landers Ln | -- | Get Directions |
| Public Collection Box | New Castle, DE 19720 | 92 Reads Way | -- | Get Directions |
