Which country or map area contains Illinois?
Illinois is shown within United States in the atlas dataset.
- Country or map area
- United States
- Region name
- Illinois
- Approximate latitude
- 39.7° north
- Approximate longitude
- 89.3° west
- Country capital
- Washington D.C.
- Country currency
- United States dollar
- World region
- North America
Quick answers about Illinois
What kind of place is Illinois?
It is shown in this atlas as a first-level state, province or administrative region.
Where is Illinois on the globe?
Its approximate map centre is 39.7° north latitude and 89.3° west longitude.
What is the capital of United States?
The country capital is Washington D.C..
Sources and review
Facts were last reviewed on 13 September 2026. Boundaries and state/province names use Natural Earth. Country reference fields use the Countries dataset. India boundary presentation follows the project’s stated Survey of India reference.