| Zipcode | Community | City | State | Metro Area |
|---|---|---|---|---|
| 03854 | New castle | New castle | New Hampshire | Boston-Cambridge-Newton MA-NH |
| 03854 | Newcastle | New castle | New Hampshire | Boston-Cambridge-Newton MA-NH |
| 04553 | Newcastle | Newcastle | Maine | |
| 16101 | New castle | New castle | Pennsylvania | New Castle PA |
| 16102 | New castle | New castle | Pennsylvania | New Castle PA |
| 16103 | New castle | New castle | Pennsylvania | New Castle PA |
| 16105 | New castle | New castle | Pennsylvania | New Castle PA |
| 16107 | New castle | New castle | Pennsylvania | New Castle PA |
| 16108 | New castle | New castle | Pennsylvania | New Castle PA |
| 19720 | New castle | New castle | Delaware | Philadelphia-Camden-Wilmington PA-NJ-DE- |
| 19721 | New castle | New castle | Delaware | Philadelphia-Camden-Wilmington PA-NJ-DE- |
| 19726 | New castle | New castle | Delaware | Philadelphia-Camden-Wilmington PA-NJ-DE- |
| 24127 | New castle | New castle | Virginia | Roanoke VA |
| 35119 | New castle | New castle | Alabama | Birmingham-Hoover AL |
| 39529 | N s t l | Stennis space center | Mississippi | Gulfport-Biloxi-Pascagoula MS |
| 40050 | New castle | New castle | Kentucky | Louisville/Jefferson County KY-IN |
| 47362 | New castle | New castle | Indiana | New Castle IN |
| 63164 | Nestle | Saint louis | Missouri | St. Louis MO-IL |
| 68757 | Newcastle | Newcastle | Nebraska | Sioux City IA-NE-SD |
| 73065 | Newcastle | Newcastle | Oklahoma | Oklahoma City OK |
| 76372 | Newcastle | Newcastle | Texas | |
| 81647 | New castle | New castle | Colorado | Glenwood Springs CO |
| 82701 | Newcastle | Newcastle | Wyoming | |
| 82715 | Newcastle | Four corners | Wyoming | |
| 84756 | Newcastle | Newcastle | Utah | Cedar City UT |
| 95658 | Newcastle | Newcastle | California | Sacramento--Roseville--Arden-Arcade CA |
| 98056 | Newcastle | Renton | Washington | Seattle-Tacoma-Bellevue WA |
| 98059 | Newcastle | Renton | Washington | Seattle-Tacoma-Bellevue WA |