New Jersey County Maps
Home » New Jersey
New Jersey has 21 counties, a population of more than 9 million people, about 598 zip codes and 342 public school districts. Those counties vary widely in population, school enrollment, zip code coverage and local boundary structure. Bergen County has the largest population in the state, while Salem County has the smallest. Browse the map, population, zip codes, school districts, subdivisions and county list sections below to explore further. Or, simply start typing in the box below to go directly to that county.
Interactive New Jersey County Map
This New Jersey county map preview highlights population-by-county context, ZIP code coverage, school districts, and local boundary structure. Full statewide and county-level data packages are available when you need complete downloadable datasets. Click or tap any county to view its maps, trends and data.
Start with a free preview, or go straight to the full New Jersey dataset .
New Jersey Population By County
New Jersey's population was over 9 million in 2020, up 497,100 (5.65%) residents from 2010. Bergen County had the largest population in the state with 955,732 people. Essex and Middlesex Counties also stand out as major population centers. Salem County was the least populated area in New Jersey with only 64,837 residents. The table below compares New Jersey county populations and recent population trends.
The Most Populated Counties In New Jersey
| County | Population | Trend (2010-2020) |
|---|---|---|
| Bergen County | 955,732 | ▴ 5.59% |
| Essex County | 863,728 | ▴ 10.17% |
| Middlesex County | 863,162 | ▴ 6.58% |
| Hudson County | 724,854 | ▴ 14.28% |
| Monmouth County | 643,615 | ▴ 2.10% |
| Download all county population data | ||
County populations reflect the latest state serving context (2020).
New Jersey County Map With ZIP Codes
New Jersey has about 598 zip codes statewide. Bergen County contains the most zip codes, with 66. County-level zip code maps give a faster and clearer way to understand local coverage as zip boundaries can span county and municipal lines. The maps below highlight a few New Jersey counties.
New Jersey School Districts By County
New Jersey has 342 public school districts with 1,016,477 students enrolled as of 2024. Bergen County has the highest district count in the state. Middlesex County has the largest total school enrollment. Mercer County posted the largest recent enrollment gain. The table below compares county level school district totals and recent enrollment trends across the state.
Largest School Districts in New Jersey
| County | Districts | Enrollment | Trend |
|---|---|---|---|
| Bergen County | 48 | 100,135 | ▾ 0.42% |
| Monmouth County | 30 | 44,452 | ▾ 0.77% |
| Camden County | 25 | 48,688 | ▴ 0.20% |
| Middlesex County | 24 | 129,100 | ▾ 0.90% |
| Morris County | 22 | 50,663 | ▾ 0.66% |
| Download all school district data | |||
School district enrollment and trend values reflect the most recent state-level context (2024).
New Jersey County Map With Subdivisions
New Jersey has about 569 local subdivisions statewide. These boundaries add another layer of detail within counties and help show how local subdivision lines fit inside county boundaries. The previews below highlight a few New Jersey counties with subdivision map coverage.
Get the Full New Jersey Data Package
The sections above provide a preview of New Jersey county maps and county-level data. The full package includes complete statewide coverage with ready-to-use files for mapping, planning, and analysis.
Everything is organized to save hours of data collection, cleanup, and integration work.
- County map exports and boundary coverage for every county in New Jersey
- Statewide GIS layers for ZIP codes, subdivisions, school districts, roads, water, and political boundaries
- Population, demographics, school, housing, and trend context aligned across counties
- Database files, map-ready exports, and documentation designed for faster research workflows
Includes GIS layers, maps, demographics, analytics, database files and planning tools.