---
type: Jurisdiction
title: "Middlesex County, NJ"
classification: county
fips: "34023"
state: "NJ"
demographics:
  population: 871290
  population_under_18: 187080
  population_18_64: 543652
  population_65_plus: 140558
  median_household_income: 111549
  poverty_rate: 8.59
  homeownership_rate: 63.65
  unemployment_rate: 6.69
  median_home_value: 462900
  gini_index: 0.4371
  vacancy_rate: 3.21
  race_white: 356769
  race_black: 90902
  race_asian: 222566
  race_native: 9028
  hispanic: 205792
  bachelors_plus: 391188
districts:
  - to: "us/states/nj/districts/12"
    rel: in-district
    area_weight: 0.5747
  - to: "us/states/nj/districts/06"
    rel: in-district
    area_weight: 0.4117
  - to: "us/states/nj/districts/senate/18"
    rel: in-district
    area_weight: 0.2188
  - to: "us/states/nj/districts/senate/14"
    rel: in-district
    area_weight: 0.2121
  - to: "us/states/nj/districts/senate/19"
    rel: in-district
    area_weight: 0.1658
  - to: "us/states/nj/districts/senate/12"
    rel: in-district
    area_weight: 0.1298
  - to: "us/states/nj/districts/senate/16"
    rel: in-district
    area_weight: 0.1269
  - to: "us/states/nj/districts/senate/17"
    rel: in-district
    area_weight: 0.1149
  - to: "us/states/nj/districts/senate/21"
    rel: in-district
    area_weight: 0.0142
  - to: "us/states/nj/districts/house/18"
    rel: in-district
    area_weight: 0.2188
  - to: "us/states/nj/districts/house/14"
    rel: in-district
    area_weight: 0.2121
  - to: "us/states/nj/districts/house/19"
    rel: in-district
    area_weight: 0.1658
  - to: "us/states/nj/districts/house/12"
    rel: in-district
    area_weight: 0.1298
  - to: "us/states/nj/districts/house/16"
    rel: in-district
    area_weight: 0.1269
  - to: "us/states/nj/districts/house/17"
    rel: in-district
    area_weight: 0.1149
  - to: "us/states/nj/districts/house/21"
    rel: in-district
    area_weight: 0.0142
sources:
  - field: demographics
    source: "Census ACS 2023"
  - field: districts
    source: "PostGIS area-intersection over Census TIGER 2024 boundaries"
confidence: official
tags: [jurisdiction, county, nj]
timestamp: "2026-07-03"
---

# Middlesex County, NJ

County jurisdiction — 3 officeholders mapped.

## Demographics (ACS 2023)

| Measure | Value |
| --- | --- |
| Population | 871290 |
| Under 18 | 187080 |
| 18–64 | 543652 |
| 65+ | 140558 |
| Median household income | 111549 |
| Poverty rate | 8.59 |
| Homeownership rate | 63.65 |
| Unemployment rate | 6.69 |
| Median home value | 462900 |
| Gini index | 0.4371 |
| Vacancy rate | 3.21 |
| White | 356769 |
| Black | 90902 |
| Asian | 222566 |
| Native | 9028 |
| Hispanic/Latino | 205792 |
| Bachelor's or higher | 391188 |

## Districts

- [NJ-12](/us/states/nj/districts/12.md) — 57% (congressional)
- [NJ-06](/us/states/nj/districts/06.md) — 41% (congressional)
- [NJ Senate District 18](/us/states/nj/districts/senate/18.md) — 22% (state senate)
- [NJ Senate District 14](/us/states/nj/districts/senate/14.md) — 21% (state senate)
- [NJ Senate District 19](/us/states/nj/districts/senate/19.md) — 17% (state senate)
- [NJ Senate District 12](/us/states/nj/districts/senate/12.md) — 13% (state senate)
- [NJ Senate District 16](/us/states/nj/districts/senate/16.md) — 13% (state senate)
- [NJ Senate District 17](/us/states/nj/districts/senate/17.md) — 11% (state senate)
- [NJ Senate District 21](/us/states/nj/districts/senate/21.md) — 1% (state senate)
- [NJ House District 18](/us/states/nj/districts/house/18.md) — 22% (state house)
- [NJ House District 14](/us/states/nj/districts/house/14.md) — 21% (state house)
- [NJ House District 19](/us/states/nj/districts/house/19.md) — 17% (state house)
- [NJ House District 12](/us/states/nj/districts/house/12.md) — 13% (state house)
- [NJ House District 16](/us/states/nj/districts/house/16.md) — 13% (state house)
- [NJ House District 17](/us/states/nj/districts/house/17.md) — 11% (state house)
- [NJ House District 21](/us/states/nj/districts/house/21.md) — 1% (state house)

## Source

- demographics: Census ACS 2023
- districts: PostGIS area-intersection over Census TIGER 2024 boundaries