---
type: Jurisdiction
title: "Mercer County, OH"
classification: county
fips: "39107"
state: "OH"
demographics:
  population: 42484
  population_under_18: 10810
  population_18_64: 23532
  population_65_plus: 8142
  median_household_income: 76782
  poverty_rate: 7.29
  homeownership_rate: 79.55
  unemployment_rate: 1.6
  median_home_value: 210600
  gini_index: 0.4027
  vacancy_rate: 9.36
  race_white: 40313
  race_black: 513
  race_asian: 201
  race_native: 23
  hispanic: 951
  bachelors_plus: 8437
districts:
  - to: "us/states/oh/districts/05"
    rel: in-district
    area_weight: 0.9993
  - to: "us/states/oh/districts/senate/12"
    rel: in-district
    area_weight: 0.9999
  - to: "us/states/oh/districts/house/84"
    rel: in-district
    area_weight: 0.9999
sources:
  - field: demographics
    source: "Census ACS 2023"
  - field: districts
    source: "PostGIS area-intersection over Census TIGER 2024 boundaries"
confidence: official
tags: [jurisdiction, county, oh]
timestamp: "2026-07-03"
---

# Mercer County, OH

County jurisdiction — 1 officeholders mapped.

## Demographics (ACS 2023)

| Measure | Value |
| --- | --- |
| Population | 42484 |
| Under 18 | 10810 |
| 18–64 | 23532 |
| 65+ | 8142 |
| Median household income | 76782 |
| Poverty rate | 7.29 |
| Homeownership rate | 79.55 |
| Unemployment rate | 1.6 |
| Median home value | 210600 |
| Gini index | 0.4027 |
| Vacancy rate | 9.36 |
| White | 40313 |
| Black | 513 |
| Asian | 201 |
| Native | 23 |
| Hispanic/Latino | 951 |
| Bachelor's or higher | 8437 |

## Districts

- [OH-05](/us/states/oh/districts/05.md) — 100% (congressional)
- [OH Senate District 12](/us/states/oh/districts/senate/12.md) — 100% (state senate)
- [OH House District 84](/us/states/oh/districts/house/84.md) — 100% (state house)

## Source

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