| | | Mercer County | NJ | 34021 | | Trenton-Princeton, NJ 45940 | New York-Newark,
NY-NJ-CT-PA 408 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=MercerCounty+NJ |
| | | Middlesex County | NJ | 34023 | Lakewood-New Brunswick,
NJ 29484 | New York-Newark-Jersey
City, NY-NJ 35620 | New York-Newark,
NY-NJ-CT-PA 408 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MiddlesexCounty+NJ |
| | | Monmouth County | NJ | 34025 | Lakewood-New Brunswick,
NJ 29484 | New York-Newark-Jersey
City, NY-NJ 35620 | New York-Newark,
NY-NJ-CT-PA 408 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MonmouthCounty+NJ |
| | | Morris County | NJ | 34027 | Newark, NJ-PA 35084 | New York-Newark-Jersey
City, NY-NJ 35620 | New York-Newark,
NY-NJ-CT-PA 408 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MorrisCounty+NJ |
| | | Ocean County | NJ | 34029 | Lakewood-New Brunswick,
NJ 29484 | New York-Newark-Jersey
City, NY-NJ 35620 | New York-Newark,
NY-NJ-CT-PA 408 | Central | metro county (urban) | recreation | https://maps.google.com/?q=OceanCounty+NJ |
| | | Passaic County | NJ | 34031 | New York-Jersey
City-White Plains, NY-NJ 35614 | New York-Newark-Jersey
City, NY-NJ 35620 | New York-Newark,
NY-NJ-CT-PA 408 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=PassaicCounty+NJ |
| | | Salem County | NJ | 34033 | Wilmington, DE-MD-NJ 48864 | Philadelphia-Camden-Wilmington,
PA-NJ-DE-MD 37980 | Philadelphia-Reading-Camden,
PA-NJ-DE-MD 428 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=SalemCounty+NJ |
| | | Somerset County | NJ | 34035 | Lakewood-New Brunswick,
NJ 29484 | New York-Newark-Jersey
City, NY-NJ 35620 | New York-Newark,
NY-NJ-CT-PA 408 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=SomersetCounty+NJ |
| | | Sussex County | NJ | 34037 | Newark, NJ-PA 35084 | New York-Newark-Jersey
City, NY-NJ 35620 | New York-Newark,
NY-NJ-CT-PA 408 | Outlying | metro county (urban) | recreation | https://maps.google.com/?q=SussexCounty+NJ |
| | | Union County | NJ | 34039 | Newark, NJ-PA 35084 | New York-Newark-Jersey
City, NY-NJ 35620 | New York-Newark,
NY-NJ-CT-PA 408 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=UnionCounty+NJ |
