---
type: Jurisdiction
title: "Jefferson County, CO"
classification: county
fips: "08059"
state: "CO"
demographics:
  population: 579377
  population_under_18: 106970
  population_18_64: 368764
  population_65_plus: 103643
  median_household_income: 110656
  poverty_rate: 6.68
  homeownership_rate: 70.73
  unemployment_rate: 3.92
  median_home_value: 637600
  gini_index: 0.4345
  vacancy_rate: 4.67
  race_white: 460410
  race_black: 6880
  race_asian: 16970
  race_native: 4226
  hispanic: 93302
  bachelors_plus: 305994
districts:
  - to: "us/states/co/districts/07"
    rel: in-district
    area_weight: 0.9297
  - to: "us/states/co/districts/02"
    rel: in-district
    area_weight: 0.0426
  - to: "us/states/co/districts/06"
    rel: in-district
    area_weight: 0.0246
  - to: "us/states/co/districts/senate/4"
    rel: in-district
    area_weight: 0.486
  - to: "us/states/co/districts/senate/20"
    rel: in-district
    area_weight: 0.3556
  - to: "us/states/co/districts/senate/22"
    rel: in-district
    area_weight: 0.0674
  - to: "us/states/co/districts/senate/19"
    rel: in-district
    area_weight: 0.0656
  - to: "us/states/co/districts/senate/16"
    rel: in-district
    area_weight: 0.0252
  - to: "us/states/co/districts/house/25"
    rel: in-district
    area_weight: 0.6034
  - to: "us/states/co/districts/house/27"
    rel: in-district
    area_weight: 0.2354
  - to: "us/states/co/districts/house/23"
    rel: in-district
    area_weight: 0.0376
  - to: "us/states/co/districts/house/28"
    rel: in-district
    area_weight: 0.0373
  - to: "us/states/co/districts/house/24"
    rel: in-district
    area_weight: 0.0328
  - to: "us/states/co/districts/house/29"
    rel: in-district
    area_weight: 0.0252
  - to: "us/states/co/districts/house/30"
    rel: in-district
    area_weight: 0.0229
sources:
  - field: demographics
    source: "Census ACS 2023"
  - field: districts
    source: "PostGIS area-intersection over Census TIGER 2024 boundaries"
confidence: official
tags: [jurisdiction, county, co]
timestamp: "2026-07-03"
---

# Jefferson County, CO

County jurisdiction — 1 officeholders mapped.

## Demographics (ACS 2023)

| Measure | Value |
| --- | --- |
| Population | 579377 |
| Under 18 | 106970 |
| 18–64 | 368764 |
| 65+ | 103643 |
| Median household income | 110656 |
| Poverty rate | 6.68 |
| Homeownership rate | 70.73 |
| Unemployment rate | 3.92 |
| Median home value | 637600 |
| Gini index | 0.4345 |
| Vacancy rate | 4.67 |
| White | 460410 |
| Black | 6880 |
| Asian | 16970 |
| Native | 4226 |
| Hispanic/Latino | 93302 |
| Bachelor's or higher | 305994 |

## Districts

- [CO-07](/us/states/co/districts/07.md) — 93% (congressional)
- [CO-02](/us/states/co/districts/02.md) — 4% (congressional)
- [CO-06](/us/states/co/districts/06.md) — 2% (congressional)
- [CO Senate District 4](/us/states/co/districts/senate/4.md) — 49% (state senate)
- [CO Senate District 20](/us/states/co/districts/senate/20.md) — 36% (state senate)
- [CO Senate District 22](/us/states/co/districts/senate/22.md) — 7% (state senate)
- [CO Senate District 19](/us/states/co/districts/senate/19.md) — 7% (state senate)
- [CO Senate District 16](/us/states/co/districts/senate/16.md) — 3% (state senate)
- [CO House District 25](/us/states/co/districts/house/25.md) — 60% (state house)
- [CO House District 27](/us/states/co/districts/house/27.md) — 24% (state house)
- [CO House District 23](/us/states/co/districts/house/23.md) — 4% (state house)
- [CO House District 28](/us/states/co/districts/house/28.md) — 4% (state house)
- [CO House District 24](/us/states/co/districts/house/24.md) — 3% (state house)
- [CO House District 29](/us/states/co/districts/house/29.md) — 3% (state house)
- [CO House District 30](/us/states/co/districts/house/30.md) — 2% (state house)

## Source

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