---
type: Jurisdiction
title: "St. Charles County, MO"
classification: county
fips: "29183"
state: "MO"
demographics:
  population: 414535
  population_under_18: 93380
  population_18_64: 250747
  population_65_plus: 70408
  median_household_income: 104692
  poverty_rate: 5.2
  homeownership_rate: 80.53
  unemployment_rate: 2.93
  median_home_value: 320800
  gini_index: 0.4085
  vacancy_rate: 3.5
  race_white: 348354
  race_black: 21335
  race_asian: 12632
  race_native: 333
  hispanic: 17405
  bachelors_plus: 168328
sources:
  - field: demographics
    source: Census ACS 2023
confidence: official
tags: [jurisdiction, county, mo]
timestamp: "2026-07-03"
---

# St. Charles County, MO

County jurisdiction — 3 officeholders mapped.

## Demographics (ACS 2023)

| Measure | Value |
| --- | --- |
| Population | 414535 |
| Under 18 | 93380 |
| 18–64 | 250747 |
| 65+ | 70408 |
| Median household income | 104692 |
| Poverty rate | 5.2 |
| Homeownership rate | 80.53 |
| Unemployment rate | 2.93 |
| Median home value | 320800 |
| Gini index | 0.4085 |
| Vacancy rate | 3.5 |
| White | 348354 |
| Black | 21335 |
| Asian | 12632 |
| Native | 333 |
| Hispanic/Latino | 17405 |
| Bachelor's or higher | 168328 |

## Source

- demographics: Census ACS 2023