---
type: Jurisdiction
title: "Yellowstone County, MT"
classification: county
fips: "30111"
state: "MT"
demographics:
  population: 168957
  population_under_18: 38803
  population_18_64: 99262
  population_65_plus: 30892
  median_household_income: 76570
  poverty_rate: 9.19
  homeownership_rate: 69.62
  unemployment_rate: 3.38
  median_home_value: 349500
  gini_index: 0.4568
  vacancy_rate: 5.85
  race_white: 144550
  race_black: 1146
  race_asian: 1298
  race_native: 6682
  hispanic: 11144
  bachelors_plus: 52017
districts:
  - to: "us/states/mt/districts/02"
    rel: in-district
    area_weight: 1.0
  - to: "us/states/mt/districts/senate/18"
    rel: in-district
    area_weight: 0.4084
  - to: "us/states/mt/districts/senate/19"
    rel: in-district
    area_weight: 0.263
  - to: "us/states/mt/districts/senate/21"
    rel: in-district
    area_weight: 0.145
  - to: "us/states/mt/districts/senate/27"
    rel: in-district
    area_weight: 0.0999
  - to: "us/states/mt/districts/senate/22"
    rel: in-district
    area_weight: 0.034
  - to: "us/states/mt/districts/senate/20"
    rel: in-district
    area_weight: 0.0289
  - to: "us/states/mt/districts/senate/26"
    rel: in-district
    area_weight: 0.0098
  - to: "us/states/mt/districts/senate/24"
    rel: in-district
    area_weight: 0.0057
  - to: "us/states/mt/districts/house/35"
    rel: in-district
    area_weight: 0.4084
  - to: "us/states/mt/districts/house/38"
    rel: in-district
    area_weight: 0.263
  - to: "us/states/mt/districts/house/42"
    rel: in-district
    area_weight: 0.145
  - to: "us/states/mt/districts/house/54"
    rel: in-district
    area_weight: 0.0728
  - to: "us/states/mt/districts/house/44"
    rel: in-district
    area_weight: 0.0328
  - to: "us/states/mt/districts/house/53"
    rel: in-district
    area_weight: 0.0271
  - to: "us/states/mt/districts/house/40"
    rel: in-district
    area_weight: 0.0258
  - to: "us/states/mt/districts/house/52"
    rel: in-district
    area_weight: 0.0086
sources:
  - field: demographics
    source: "Census ACS 2023"
  - field: districts
    source: "PostGIS area-intersection over Census TIGER 2024 boundaries"
confidence: official
tags: [jurisdiction, county, mt]
timestamp: "2026-07-03"
---

# Yellowstone County, MT

County jurisdiction — 1 officeholders mapped.

## Demographics (ACS 2023)

| Measure | Value |
| --- | --- |
| Population | 168957 |
| Under 18 | 38803 |
| 18–64 | 99262 |
| 65+ | 30892 |
| Median household income | 76570 |
| Poverty rate | 9.19 |
| Homeownership rate | 69.62 |
| Unemployment rate | 3.38 |
| Median home value | 349500 |
| Gini index | 0.4568 |
| Vacancy rate | 5.85 |
| White | 144550 |
| Black | 1146 |
| Asian | 1298 |
| Native | 6682 |
| Hispanic/Latino | 11144 |
| Bachelor's or higher | 52017 |

## Districts

- [MT-02](/us/states/mt/districts/02.md) — 100% (congressional)
- [MT Senate District 18](/us/states/mt/districts/senate/18.md) — 41% (state senate)
- [MT Senate District 19](/us/states/mt/districts/senate/19.md) — 26% (state senate)
- [MT Senate District 21](/us/states/mt/districts/senate/21.md) — 14% (state senate)
- [MT Senate District 27](/us/states/mt/districts/senate/27.md) — 10% (state senate)
- [MT Senate District 22](/us/states/mt/districts/senate/22.md) — 3% (state senate)
- [MT Senate District 20](/us/states/mt/districts/senate/20.md) — 3% (state senate)
- [MT Senate District 26](/us/states/mt/districts/senate/26.md) — 1% (state senate)
- [MT Senate District 24](/us/states/mt/districts/senate/24.md) — 1% (state senate)
- [MT House District 35](/us/states/mt/districts/house/35.md) — 41% (state house)
- [MT House District 38](/us/states/mt/districts/house/38.md) — 26% (state house)
- [MT House District 42](/us/states/mt/districts/house/42.md) — 14% (state house)
- [MT House District 54](/us/states/mt/districts/house/54.md) — 7% (state house)
- [MT House District 44](/us/states/mt/districts/house/44.md) — 3% (state house)
- [MT House District 53](/us/states/mt/districts/house/53.md) — 3% (state house)
- [MT House District 40](/us/states/mt/districts/house/40.md) — 3% (state house)
- [MT House District 52](/us/states/mt/districts/house/52.md) — 1% (state house)

## Source

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