Washington County
URL: https://knowledge.ivjn.us/en/places/mo-washington-county.html

Washington County is a county of Missouri, United States.

## Overview

Washington County is a county of [Missouri](https://knowledge.ivjn.us/en/places/missouri.html), United States (FIPS mo221), with a population of about 23,514[^geonames].

## Geography

- Coordinates: 37.9617, -90.8774
- Time zone: America/Chicago

Updated: 2026-10-29

Relations:
- Located in: Missouri https://knowledge.ivjn.us/en/places/missouri.html
- Contains places: Caledonia https://knowledge.ivjn.us/en/places/mo-caledonia.html
- Contains places: Irondale https://knowledge.ivjn.us/en/places/mo-irondale.html
- Contains places: Mineral Point https://knowledge.ivjn.us/en/places/mo-mineral-point.html
- Contains places: Potosi https://knowledge.ivjn.us/en/places/mo-potosi.html

Mentioned in:
- Caledonia https://knowledge.ivjn.us/en/places/mo-caledonia.html
- Irondale https://knowledge.ivjn.us/en/places/mo-irondale.html
- Mineral Point https://knowledge.ivjn.us/en/places/mo-mineral-point.html
- Potosi https://knowledge.ivjn.us/en/places/mo-potosi.html

Sources:
- GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip