---
type: Jurisdiction
title: "Cook County, IL"
classification: county
fips: "17031"
state: "IL"
demographics:
  population: 5182090
  population_under_18: 1092202
  population_18_64: 3262732
  population_65_plus: 827156
  median_household_income: 83498
  poverty_rate: 13.49
  homeownership_rate: 57.74
  unemployment_rate: 7.01
  median_home_value: 324500
  gini_index: 0.5043
  vacancy_rate: 7.74
  race_white: 2257930
  race_black: 1148066
  race_asian: 411778
  race_native: 47333
  hispanic: 1387163
  bachelors_plus: 2210554
districts:
  - to: "us/states/il/districts/02"
    rel: in-district
    area_weight: 0.1018
  - to: "us/states/il/districts/06"
    rel: in-district
    area_weight: 0.0861
  - to: "us/states/il/districts/05"
    rel: in-district
    area_weight: 0.0728
  - to: "us/states/il/districts/08"
    rel: in-district
    area_weight: 0.063
  - to: "us/states/il/districts/01"
    rel: in-district
    area_weight: 0.0542
  - to: "us/states/il/districts/04"
    rel: in-district
    area_weight: 0.0514
  - to: "us/states/il/districts/09"
    rel: in-district
    area_weight: 0.0505
  - to: "us/states/il/districts/07"
    rel: in-district
    area_weight: 0.042
  - to: "us/states/il/districts/03"
    rel: in-district
    area_weight: 0.0338
  - to: "us/states/il/districts/10"
    rel: in-district
    area_weight: 0.022
  - to: "us/states/il/districts/11"
    rel: in-district
    area_weight: 0.0071
  - to: "us/states/il/districts/senate/15"
    rel: in-district
    area_weight: 0.0421
  - to: "us/states/il/districts/senate/18"
    rel: in-district
    area_weight: 0.04
  - to: "us/states/il/districts/senate/26"
    rel: in-district
    area_weight: 0.0385
  - to: "us/states/il/districts/senate/17"
    rel: in-district
    area_weight: 0.0359
  - to: "us/states/il/districts/senate/14"
    rel: in-district
    area_weight: 0.0339
  - to: "us/states/il/districts/senate/28"
    rel: in-district
    area_weight: 0.0327
  - to: "us/states/il/districts/senate/19"
    rel: in-district
    area_weight: 0.0295
  - to: "us/states/il/districts/senate/27"
    rel: in-district
    area_weight: 0.026
  - to: "us/states/il/districts/senate/29"
    rel: in-district
    area_weight: 0.0246
  - to: "us/states/il/districts/senate/9"
    rel: in-district
    area_weight: 0.0241
  - to: "us/states/il/districts/senate/41"
    rel: in-district
    area_weight: 0.0225
  - to: "us/states/il/districts/senate/4"
    rel: in-district
    area_weight: 0.022
  - to: "us/states/il/districts/senate/22"
    rel: in-district
    area_weight: 0.0217
  - to: "us/states/il/districts/senate/11"
    rel: in-district
    area_weight: 0.0207
  - to: "us/states/il/districts/senate/39"
    rel: in-district
    area_weight: 0.0207
  - to: "us/states/il/districts/senate/8"
    rel: in-district
    area_weight: 0.0173
  - to: "us/states/il/districts/senate/16"
    rel: in-district
    area_weight: 0.0166
  - to: "us/states/il/districts/senate/10"
    rel: in-district
    area_weight: 0.0163
  - to: "us/states/il/districts/senate/1"
    rel: in-district
    area_weight: 0.0152
  - to: "us/states/il/districts/senate/40"
    rel: in-district
    area_weight: 0.0112
  - to: "us/states/il/districts/senate/5"
    rel: in-district
    area_weight: 0.0109
  - to: "us/states/il/districts/senate/13"
    rel: in-district
    area_weight: 0.0102
  - to: "us/states/il/districts/senate/3"
    rel: in-district
    area_weight: 0.0097
  - to: "us/states/il/districts/senate/12"
    rel: in-district
    area_weight: 0.009
  - to: "us/states/il/districts/senate/2"
    rel: in-district
    area_weight: 0.0068
  - to: "us/states/il/districts/senate/20"
    rel: in-district
    area_weight: 0.0066
  - to: "us/states/il/districts/senate/25"
    rel: in-district
    area_weight: 0.0057
  - to: "us/states/il/districts/house/38"
    rel: in-district
    area_weight: 0.0235
  - to: "us/states/il/districts/house/30"
    rel: in-district
    area_weight: 0.0234
  - to: "us/states/il/districts/house/56"
    rel: in-district
    area_weight: 0.0229
  - to: "us/states/il/districts/house/82"
    rel: in-district
    area_weight: 0.0225
  - to: "us/states/il/districts/house/34"
    rel: in-district
    area_weight: 0.0224
  - to: "us/states/il/districts/house/57"
    rel: in-district
    area_weight: 0.0223
  - to: "us/states/il/districts/house/52"
    rel: in-district
    area_weight: 0.0221
  - to: "us/states/il/districts/house/36"
    rel: in-district
    area_weight: 0.0205
  - to: "us/states/il/districts/house/35"
    rel: in-district
    area_weight: 0.0195
  - to: "us/states/il/districts/house/29"
    rel: in-district
    area_weight: 0.0187
  - to: "us/states/il/districts/house/27"
    rel: in-district
    area_weight: 0.0183
  - to: "us/states/il/districts/house/51"
    rel: in-district
    area_weight: 0.0163
  - to: "us/states/il/districts/house/28"
    rel: in-district
    area_weight: 0.0156
  - to: "us/states/il/districts/house/17"
    rel: in-district
    area_weight: 0.015
  - to: "us/states/il/districts/house/44"
    rel: in-district
    area_weight: 0.0145
  - to: "us/states/il/districts/house/77"
    rel: in-district
    area_weight: 0.0139
  - to: "us/states/il/districts/house/33"
    rel: in-district
    area_weight: 0.0135
  - to: "us/states/il/districts/house/54"
    rel: in-district
    area_weight: 0.0134
  - to: "us/states/il/districts/house/7"
    rel: in-district
    area_weight: 0.0127
  - to: "us/states/il/districts/house/53"
    rel: in-district
    area_weight: 0.0126
  - to: "us/states/il/districts/house/21"
    rel: in-district
    area_weight: 0.0113
  - to: "us/states/il/districts/house/20"
    rel: in-district
    area_weight: 0.0109
  - to: "us/states/il/districts/house/15"
    rel: in-district
    area_weight: 0.0106
  - to: "us/states/il/districts/house/55"
    rel: in-district
    area_weight: 0.0098
  - to: "us/states/il/districts/house/80"
    rel: in-district
    area_weight: 0.0098
  - to: "us/states/il/districts/house/31"
    rel: in-district
    area_weight: 0.0097
  - to: "us/states/il/districts/house/22"
    rel: in-district
    area_weight: 0.0094
  - to: "us/states/il/districts/house/8"
    rel: in-district
    area_weight: 0.0093
  - to: "us/states/il/districts/house/18"
    rel: in-district
    area_weight: 0.0091
  - to: "us/states/il/districts/house/2"
    rel: in-district
    area_weight: 0.0083
  - to: "us/states/il/districts/house/43"
    rel: in-district
    area_weight: 0.0072
  - to: "us/states/il/districts/house/1"
    rel: in-district
    area_weight: 0.0069
  - to: "us/states/il/districts/house/32"
    rel: in-district
    area_weight: 0.0069
  - to: "us/states/il/districts/house/78"
    rel: in-district
    area_weight: 0.0068
  - to: "us/states/il/districts/house/16"
    rel: in-district
    area_weight: 0.0067
  - to: "us/states/il/districts/house/37"
    rel: in-district
    area_weight: 0.006
  - to: "us/states/il/districts/house/25"
    rel: in-district
    area_weight: 0.0057
  - to: "us/states/il/districts/house/49"
    rel: in-district
    area_weight: 0.0057
  - to: "us/states/il/districts/house/10"
    rel: in-district
    area_weight: 0.0056
  - to: "us/states/il/districts/house/6"
    rel: in-district
    area_weight: 0.0055
  - to: "us/states/il/districts/house/19"
    rel: in-district
    area_weight: 0.0054
  - to: "us/states/il/districts/house/9"
    rel: in-district
    area_weight: 0.0053
sources:
  - field: demographics
    source: "Census ACS 2023"
  - field: districts
    source: "PostGIS area-intersection over Census TIGER 2024 boundaries"
confidence: official
tags: [jurisdiction, county, il]
timestamp: "2026-07-03"
---

# Cook County, IL

County jurisdiction — 1 officeholders mapped.

## Demographics (ACS 2023)

| Measure | Value |
| --- | --- |
| Population | 5182090 |
| Under 18 | 1092202 |
| 18–64 | 3262732 |
| 65+ | 827156 |
| Median household income | 83498 |
| Poverty rate | 13.49 |
| Homeownership rate | 57.74 |
| Unemployment rate | 7.01 |
| Median home value | 324500 |
| Gini index | 0.5043 |
| Vacancy rate | 7.74 |
| White | 2257930 |
| Black | 1148066 |
| Asian | 411778 |
| Native | 47333 |
| Hispanic/Latino | 1387163 |
| Bachelor's or higher | 2210554 |

## Districts

- [IL-02](/us/states/il/districts/02.md) — 10% (congressional)
- [IL-06](/us/states/il/districts/06.md) — 9% (congressional)
- [IL-05](/us/states/il/districts/05.md) — 7% (congressional)
- [IL-08](/us/states/il/districts/08.md) — 6% (congressional)
- [IL-01](/us/states/il/districts/01.md) — 5% (congressional)
- [IL-04](/us/states/il/districts/04.md) — 5% (congressional)
- [IL-09](/us/states/il/districts/09.md) — 5% (congressional)
- [IL-07](/us/states/il/districts/07.md) — 4% (congressional)
- [IL-03](/us/states/il/districts/03.md) — 3% (congressional)
- [IL-10](/us/states/il/districts/10.md) — 2% (congressional)
- [IL-11](/us/states/il/districts/11.md) — 1% (congressional)
- [IL Senate District 15](/us/states/il/districts/senate/15.md) — 4% (state senate)
- [IL Senate District 18](/us/states/il/districts/senate/18.md) — 4% (state senate)
- [IL Senate District 26](/us/states/il/districts/senate/26.md) — 4% (state senate)
- [IL Senate District 17](/us/states/il/districts/senate/17.md) — 4% (state senate)
- [IL Senate District 14](/us/states/il/districts/senate/14.md) — 3% (state senate)
- [IL Senate District 28](/us/states/il/districts/senate/28.md) — 3% (state senate)
- [IL Senate District 19](/us/states/il/districts/senate/19.md) — 3% (state senate)
- [IL Senate District 27](/us/states/il/districts/senate/27.md) — 3% (state senate)
- [IL Senate District 29](/us/states/il/districts/senate/29.md) — 2% (state senate)
- [IL Senate District 9](/us/states/il/districts/senate/9.md) — 2% (state senate)
- [IL Senate District 41](/us/states/il/districts/senate/41.md) — 2% (state senate)
- [IL Senate District 4](/us/states/il/districts/senate/4.md) — 2% (state senate)
- [IL Senate District 22](/us/states/il/districts/senate/22.md) — 2% (state senate)
- [IL Senate District 11](/us/states/il/districts/senate/11.md) — 2% (state senate)
- [IL Senate District 39](/us/states/il/districts/senate/39.md) — 2% (state senate)
- [IL Senate District 8](/us/states/il/districts/senate/8.md) — 2% (state senate)
- [IL Senate District 16](/us/states/il/districts/senate/16.md) — 2% (state senate)
- [IL Senate District 10](/us/states/il/districts/senate/10.md) — 2% (state senate)
- [IL Senate District 1](/us/states/il/districts/senate/1.md) — 2% (state senate)
- [IL Senate District 40](/us/states/il/districts/senate/40.md) — 1% (state senate)
- [IL Senate District 5](/us/states/il/districts/senate/5.md) — 1% (state senate)
- [IL Senate District 13](/us/states/il/districts/senate/13.md) — 1% (state senate)
- [IL Senate District 3](/us/states/il/districts/senate/3.md) — 1% (state senate)
- [IL Senate District 12](/us/states/il/districts/senate/12.md) — 1% (state senate)
- [IL Senate District 2](/us/states/il/districts/senate/2.md) — 1% (state senate)
- [IL Senate District 20](/us/states/il/districts/senate/20.md) — 1% (state senate)
- [IL Senate District 25](/us/states/il/districts/senate/25.md) — 1% (state senate)
- [IL House District 38](/us/states/il/districts/house/38.md) — 2% (state house)
- [IL House District 30](/us/states/il/districts/house/30.md) — 2% (state house)
- [IL House District 56](/us/states/il/districts/house/56.md) — 2% (state house)
- [IL House District 82](/us/states/il/districts/house/82.md) — 2% (state house)
- [IL House District 34](/us/states/il/districts/house/34.md) — 2% (state house)
- [IL House District 57](/us/states/il/districts/house/57.md) — 2% (state house)
- [IL House District 52](/us/states/il/districts/house/52.md) — 2% (state house)
- [IL House District 36](/us/states/il/districts/house/36.md) — 2% (state house)
- [IL House District 35](/us/states/il/districts/house/35.md) — 2% (state house)
- [IL House District 29](/us/states/il/districts/house/29.md) — 2% (state house)
- [IL House District 27](/us/states/il/districts/house/27.md) — 2% (state house)
- [IL House District 51](/us/states/il/districts/house/51.md) — 2% (state house)
- [IL House District 28](/us/states/il/districts/house/28.md) — 2% (state house)
- [IL House District 17](/us/states/il/districts/house/17.md) — 2% (state house)
- [IL House District 44](/us/states/il/districts/house/44.md) — 1% (state house)
- [IL House District 77](/us/states/il/districts/house/77.md) — 1% (state house)
- [IL House District 33](/us/states/il/districts/house/33.md) — 1% (state house)
- [IL House District 54](/us/states/il/districts/house/54.md) — 1% (state house)
- [IL House District 7](/us/states/il/districts/house/7.md) — 1% (state house)
- [IL House District 53](/us/states/il/districts/house/53.md) — 1% (state house)
- [IL House District 21](/us/states/il/districts/house/21.md) — 1% (state house)
- [IL House District 20](/us/states/il/districts/house/20.md) — 1% (state house)
- [IL House District 15](/us/states/il/districts/house/15.md) — 1% (state house)
- [IL House District 55](/us/states/il/districts/house/55.md) — 1% (state house)
- [IL House District 80](/us/states/il/districts/house/80.md) — 1% (state house)
- [IL House District 31](/us/states/il/districts/house/31.md) — 1% (state house)
- [IL House District 22](/us/states/il/districts/house/22.md) — 1% (state house)
- [IL House District 8](/us/states/il/districts/house/8.md) — 1% (state house)
- [IL House District 18](/us/states/il/districts/house/18.md) — 1% (state house)
- [IL House District 2](/us/states/il/districts/house/2.md) — 1% (state house)
- [IL House District 43](/us/states/il/districts/house/43.md) — 1% (state house)
- [IL House District 1](/us/states/il/districts/house/1.md) — 1% (state house)
- [IL House District 32](/us/states/il/districts/house/32.md) — 1% (state house)
- [IL House District 78](/us/states/il/districts/house/78.md) — 1% (state house)
- [IL House District 16](/us/states/il/districts/house/16.md) — 1% (state house)
- [IL House District 37](/us/states/il/districts/house/37.md) — 1% (state house)
- [IL House District 25](/us/states/il/districts/house/25.md) — 1% (state house)
- [IL House District 49](/us/states/il/districts/house/49.md) — 1% (state house)
- [IL House District 10](/us/states/il/districts/house/10.md) — 1% (state house)
- [IL House District 6](/us/states/il/districts/house/6.md) — 1% (state house)
- [IL House District 19](/us/states/il/districts/house/19.md) — 1% (state house)
- [IL House District 9](/us/states/il/districts/house/9.md) — 1% (state house)

## Source

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