Deerfield
URL: https://knowledge.ivjn.us/en/places/il-deerfield.html

Deerfield is a city in Illinois, United States.

## Overview

Deerfield is a city in [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States, with a population of about 19,019[^geonames].

## Geography

- Coordinates: 42.1711, -87.8445

Updated: 2026-10-29

Relations:
- Located in: Lake County https://knowledge.ivjn.us/en/places/il-lake-county.html

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