---
type: Jurisdiction
title: "Johnson County, KS"
classification: county
fips: "20091"
state: "KS"
demographics:
  population: 620631
  population_under_18: 145751
  population_18_64: 375875
  population_65_plus: 99005
  median_household_income: 109208
  poverty_rate: 5.41
  homeownership_rate: 68.53
  unemployment_rate: 3.2
  median_home_value: 391200
  gini_index: 0.4457
  vacancy_rate: 3.9
  race_white: 487296
  race_black: 30711
  race_asian: 32405
  race_native: 1940
  hispanic: 57813
  bachelors_plus: 342034
sources:
  - field: demographics
    source: Census ACS 2023
confidence: official
tags: [jurisdiction, county, ks]
timestamp: "2026-07-03"
---

# Johnson County, KS

County jurisdiction — 4 officeholders mapped.

## Demographics (ACS 2023)

| Measure | Value |
| --- | --- |
| Population | 620631 |
| Under 18 | 145751 |
| 18–64 | 375875 |
| 65+ | 99005 |
| Median household income | 109208 |
| Poverty rate | 5.41 |
| Homeownership rate | 68.53 |
| Unemployment rate | 3.2 |
| Median home value | 391200 |
| Gini index | 0.4457 |
| Vacancy rate | 3.9 |
| White | 487296 |
| Black | 30711 |
| Asian | 32405 |
| Native | 1940 |
| Hispanic/Latino | 57813 |
| Bachelor's or higher | 342034 |

## Source

- demographics: Census ACS 2023