Lake County MABAS Division 4 has undergone a division wide systematic renumbering of stations and also the apparatus. This listing showing  revised station numbering  was forwarded by Bill Friedrich:
The county which consists of 26 fire departments and/or fire districts is divided into 4 quadrants. Each quad is represented by the first digit in the new numbering system. The second digit now represents the department within that quad and the final digit represents the station number for that particular department.

Abbott’s fire station is now Station 111

Beach Park is Station 121

Gurnee Stations 1 & 2 become Stations 131 & 132

Newport Stations 1 & 2 become Stations 141 & 142

North Chicago Stations 1 & 2 become Stations 151 & 152

Waukegan Stations 1-5 become Stations 161-165

Winthrop Harbor is now Station 171

Zion stations 1 & 2 become Stations 181 & 182

Great Lakes Naval Training Center Stations 1-3 become Stations 191-193

Antioch Stations 1-3  become Stations 211-213

Fox Lake Stations 1-3 become Stations 221-223

Lake Villa Stations 1-3 become Stations 241-243

Round Lake Stations 1-3 become Stations 261-263

Grayslake Stations 1 & 2 become Stations 271 & 272

Lake Zurich Stations 1-4 become Stations 321-324

Wauconda Stations 1-3 become Stations 341-343

Barrington Stations 1-3 become Stations 361-363

Countryside Stations 1 & 2 are now Stations 411 & 412

Lake Forest Stations 1 & 2 are now Stations 421 & 422

Mundelein Stations 1 & 2 are now Stations 431 & 432

Knollwood is now Station 441

Lake Bluff is Station 451

Libertyville Stations 1 & 2 are now Stations 461 & 462

The Buffalo Grove, Long Grove and Lincolnshire-Riverwoods Fire Departments/Districts have previously renumbered their stations in conjunction with Northwest Central Dispatch (Buffalo Grove) or RED Center (Long Grove and Lincolnshire Riverwoods) and a re subsequently not participating in the new Lake County numbering system.