| 07202 Bayway | 908 | Union County | New Jersey (NJ) |
| 07922 Berkeley Heights | 908 | Union County | New Jersey (NJ) |
| 07201 Betsytown | 908 | Union County | New Jersey (NJ) |
| 07083 Chestnut | 908 | Union County | New Jersey (NJ) |
| 07066 Clark | 908 | Union County | New Jersey (NJ) |
| 07016 Cranford | 908 | Union County | New Jersey (NJ) |
| 07201 Elizabeth | 908 | Union County | New Jersey (NJ) |
| 07202 Elizabeth | 908 | Union County | New Jersey (NJ) |
| 07206 Elizabeth | 908 | Union County | New Jersey (NJ) |
| 07207 Elizabeth | 908 | Union County | New Jersey (NJ) |
| 07208 Elizabeth | 908 | Union County | New Jersey (NJ) |
| 07206 Elizabethport | 908 | Union County | New Jersey (NJ) |
| 07202 Elmora | 908 | Union County | New Jersey (NJ) |
| 07023 Fanwood | 908 | Union County | New Jersey (NJ) |
| 07027 Garwood | 908 | Union County | New Jersey (NJ) |
| 07205 Hillside | 908 | Union County | New Jersey (NJ) |
| 07205 Ind Hillside | 908 | Union County | New Jersey (NJ) |
| 07205 Industrial Hillside | 908 | Union County | New Jersey (NJ) |
| 07033 Kenilworth | 908 | Union County | New Jersey (NJ) |
| 07036 Linden | 908 | Union County | New Jersey (NJ) |
| 07092 Mountainside | 908 | Union County | New Jersey (NJ) |
| 07060 Muhlenberg | 908 | Union County | New Jersey (NJ) |
| 07974 Murray Hill | 908 | Union County | New Jersey (NJ) |
| 07974 New Providence | 908 | Union County | New Jersey (NJ) |
| 07974 New Providnce | 908 | Union County | New Jersey (NJ) |
| 07208 North Elizabeth | 908 | Union County | New Jersey (NJ) |
| 07060 North Plainfield | 908 | Union County | New Jersey (NJ) |
| 07062 North Plainfield | 908 | Union County | New Jersey (NJ) |
| 07063 North Plainfield | 908 | Union County | New Jersey (NJ) |
| 07202 Parkandbush | 908 | Union County | New Jersey (NJ) |
| 07201 Peterstown | 908 | Union County | New Jersey (NJ) |
| 07060 Plainfield | 908 | Union County | New Jersey (NJ) |
| 07061 Plainfield | 908 | Union County | New Jersey (NJ) |
| 07062 Plainfield | 908 | Union County | New Jersey (NJ) |
| 07063 Plainfield | 908 | Union County | New Jersey (NJ) |
| 07065 Rahway | 732/848 | Union County | New Jersey (NJ) |
| 07203 Roselle | 908 | Union County | New Jersey (NJ) |
| 07204 Roselle Park | 908 | Union County | New Jersey (NJ) |
| 07076 Scotch Plns | 908 | Union County | New Jersey (NJ) |
| 07081 Springfield | 973/862 | Union County | New Jersey (NJ) |
| 07901 Summit | 908 | Union County | New Jersey (NJ) |
| 07902 Summit | 908 | Union County | New Jersey (NJ) |
| 07083 Townley | 908 | Union County | New Jersey (NJ) |
| 07036 Tremley | 908 | Union County | New Jersey (NJ) |
| 07036 Tremley Point | 908 | Union County | New Jersey (NJ) |
| 07083 Union | 908 | Union County | New Jersey (NJ) |
| 07083 Union Center | 908 | Union County | New Jersey (NJ) |
| 07201 Union Square | 908 | Union County | New Jersey (NJ) |
| 07088 Vauxhall | 908 | Union County | New Jersey (NJ) |
| 07090 Westfield | 908 | Union County | New Jersey (NJ) |
| 07091 Westfield | 908 | Union County | New Jersey (NJ) |
| 07036 Winfield Park | 908 | Union County | New Jersey (NJ) |