| | 3403905320 | Berkeley Heights township | Union County | NJ | Active government
providing primary
general-purpose functions A |
| | 3403913150 | Clark township | Union County | NJ | Active government
providing primary
general-purpose functions A |
| | 3403915640 | Cranford township | Union County | NJ | Active government
providing primary
general-purpose functions A |
| | 3403921000 | Elizabeth city | Union County | NJ | Fictitious entity created
to fill the Census Bureau
geographic hierarchy F |
| | 3403922860 | Fanwood borough | Union County | NJ | Fictitious entity created
to fill the Census Bureau
geographic hierarchy F |
| | 3403925800 | Garwood borough | Union County | NJ | Fictitious entity created
to fill the Census Bureau
geographic hierarchy F |
| | 3403931980 | Hillside township | Union County | NJ | Active government
providing primary
general-purpose functions A |
| | 3403936690 | Kenilworth borough | Union County | NJ | Fictitious entity created
to fill the Census Bureau
geographic hierarchy F |
| | 3403940350 | Linden city | Union County | NJ | Fictitious entity created
to fill the Census Bureau
geographic hierarchy F |
| | 3403948510 | Mountainside borough | Union County | NJ | Fictitious entity created
to fill the Census Bureau
geographic hierarchy F |