Illinois has a smaller but important group of active military installations. This guide covers 3 major installations across Army, Air Force and Navy.

Military Bases in Illinois

The installations in Illinois support training, logistics. They are grouped by branch below so readers can find each base quickly.

Army Bases in Illinois

Army installations in Illinois support training, readiness, testing, logistics or other land-force missions. The exact role depends on the installation.

Rock Island Arsenal

Rock Island Arsenal is an active army installation in the Rock Island area. Its main work includes army logistics, manufacturing and sustainment, with facilities that support the mission and assigned personnel.

BranchArmy
LocationRock Island, Illinois
Address390 Rodman Avenue, Rock Island, IL 61299
Main contact309-782-6001
Main operationsArmy logistics, manufacturing and sustainment
Key facilitiesWarehouses, maintenance areas, logistics facilities and base support
StatusActive

Air Force Bases in Illinois

Air Force installations in Illinois support flying missions, training, maintenance and readiness. Some also handle specialized testing or command work.

Scott Air Force Base

Scott Air Force Base is an active air force installation in the Belleville area area. Its main work includes air mobility and transportation command support, with facilities that support the mission and assigned personnel.

BranchAir Force
LocationBelleville area, Illinois
Address404 W. Martin Street, Building 1650, Scott AFB, IL 62225
Main contact618-256-8668
Main operationsAir mobility and transportation command support
Key facilitiesAirfield, hangars or maintenance areas, and personnel support services
StatusActive

Navy Bases in Illinois

Navy installations in Illinois support ships, submarines, aviation, training, weapons or shore-based commands.

Naval Station Great Lakes

Naval Station Great Lakes is an active navy installation in the North Chicago area. Its main work includes navy recruit and technical training, with facilities that support the mission and assigned personnel.

BranchNavy
LocationNorth Chicago, Illinois
Address2601 E. Paul Jones Street, Great Lakes, IL 60088
Main contact847-688-3500
Main operationsNavy recruit and technical training
Key facilitiesPiers or waterfront facilities, operations areas and support services
StatusActive

Frequently Asked Questions

How many active military bases are in Illinois?

Using the major-installation definition used in this guide, Illinois has 3 active military or defense installations. Recruiting offices and unit-only Guard listings are not counted as separate bases.

Which military branches have bases in Illinois?

This list includes installations connected with the Army, Air Force and Navy. Joint and other defense installations are listed separately when they are present.

Are there army bases in Illinois?

Yes. This guide lists 1 army bases in Illinois, including Rock Island Arsenal.

Are there air force bases in Illinois?

Yes. This guide lists 1 air force bases in Illinois, including Scott Air Force Base.

Can civilians visit military bases in Illinois?

Sometimes, but access rules vary by installation and can change. Visitors may need an approved sponsor, a valid ID or a visitor pass. Check with the installation before traveling.

Does this list include recruiting offices in Illinois?

No. Recruiting battalions and similar administrative listings are not counted as separate military bases. The list focuses on active installation-type locations.