The Central District includes all City of Joliet areas bordered by the Des Plaines River (to the east), Theodore St (to the north), the 'Joliet Junction Trail' (to the west), and Interstate 80 (to the south). The Central District currently has 6 Sectors (Central District Sector Maps). It includes:

• Amita Presence St. Joseph Medical Center
• The central business areas (Plainfield Rd area, Larkin Ave area, W Jefferson St area).
• Joliet Township West High School.
• St. Pat’s, Reedwood, Idyleside, Midland West, Cathedral, St Mary's, Cunningham, Garnsey, Old Plank, Emerald Lawns, Briargate, Bridal Wreath, and Marycrest neighborhoods.

The West District includes all City of Joliet areas west of the The 'Joliet Junction Trail' / Gaylord Rd in both Will and Kendall counties. The West District currently has 6 Sectors (West District Sector Maps). It includes:

• Joliet Police West Sub-Station (7196 Caton Farm Rd, Plainfield, IL 60586).
• The west business areas (Mall Loop, Rt 59, Essington Rd, W Jefferson St).
• The west commercial areas (I-80 & Houbolt Rd area, McDonough St & Caterpillar Dr area).
• Plainfield South High School & Joliet Junior College.
• Glenwood Manor, Old Kent, Twin Oaks, Timbers, Sanctuary, Autumn Lakes, Beaver Creek, Warwick, Picardy, Wexford, Grand Prairie, Chase Lakes, Heritage Lakes, Lakewood Falls, Cambridge, Springwood, Caton Crossing, County Glen, Riverbrook, Wedgewood, Brighton Lakes, Wesemere, Mayfair, Cumberland, Clublands, Greywall, and Lakewood Prairie neighborhoods.
• Hollywood Casino.