---
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
districts:
  - to: "us/states/mo/districts/03"
    rel: in-district
    area_weight: 0.6148
  - to: "us/states/mo/districts/02"
    rel: in-district
    area_weight: 0.3809
  - to: "us/states/mo/districts/senate/2"
    rel: in-district
    area_weight: 0.5078
  - to: "us/states/mo/districts/senate/23"
    rel: in-district
    area_weight: 0.4043
  - to: "us/states/mo/districts/senate/10"
    rel: in-district
    area_weight: 0.0862
  - to: "us/states/mo/districts/house/102"
    rel: in-district
    area_weight: 0.3388
  - to: "us/states/mo/districts/house/65"
    rel: in-district
    area_weight: 0.2954
  - to: "us/states/mo/districts/house/64"
    rel: in-district
    area_weight: 0.1598
  - to: "us/states/mo/districts/house/69"
    rel: in-district
    area_weight: 0.0431
  - to: "us/states/mo/districts/house/63"
    rel: in-district
    area_weight: 0.0331
  - to: "us/states/mo/districts/house/108"
    rel: in-district
    area_weight: 0.0275
  - to: "us/states/mo/districts/house/106"
    rel: in-district
    area_weight: 0.0263
  - to: "us/states/mo/districts/house/107"
    rel: in-district
    area_weight: 0.0201
  - to: "us/states/mo/districts/house/103"
    rel: in-district
    area_weight: 0.0196
  - to: "us/states/mo/districts/house/105"
    rel: in-district
    area_weight: 0.0181
  - to: "us/states/mo/districts/house/104"
    rel: in-district
    area_weight: 0.0165
sources:
  - field: demographics
    source: "Census ACS 2023"
  - field: districts
    source: "PostGIS area-intersection over Census TIGER 2024 boundaries"
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 |

## Districts

- [MO-03](/us/states/mo/districts/03.md) — 61% (congressional)
- [MO-02](/us/states/mo/districts/02.md) — 38% (congressional)
- [MO Senate District 2](/us/states/mo/districts/senate/2.md) — 51% (state senate)
- [MO Senate District 23](/us/states/mo/districts/senate/23.md) — 40% (state senate)
- [MO Senate District 10](/us/states/mo/districts/senate/10.md) — 9% (state senate)
- [MO House District 102](/us/states/mo/districts/house/102.md) — 34% (state house)
- [MO House District 65](/us/states/mo/districts/house/65.md) — 30% (state house)
- [MO House District 64](/us/states/mo/districts/house/64.md) — 16% (state house)
- [MO House District 69](/us/states/mo/districts/house/69.md) — 4% (state house)
- [MO House District 63](/us/states/mo/districts/house/63.md) — 3% (state house)
- [MO House District 108](/us/states/mo/districts/house/108.md) — 3% (state house)
- [MO House District 106](/us/states/mo/districts/house/106.md) — 3% (state house)
- [MO House District 107](/us/states/mo/districts/house/107.md) — 2% (state house)
- [MO House District 103](/us/states/mo/districts/house/103.md) — 2% (state house)
- [MO House District 105](/us/states/mo/districts/house/105.md) — 2% (state house)
- [MO House District 104](/us/states/mo/districts/house/104.md) — 2% (state house)

## Source

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