Exhibit 21
The following is a list of subsidiaries of the registrant as of December 31, 2018, omitting subsidiaries which, considered in the aggregate, would not constitute a significant subsidiary. The registrant directly or indirectly owns 100% of the voting securities of each listed entity except where noted.
SUBSIDIARIES OF SP PLUS CORPORATION
| CORPORATE ENTITIES | JURISDICTION | |
| Central Parking Corporation | Tennessee | |
| SP Plus Security Services, Inc. | Delaware | |
| Standard Auto Park, Inc. | Illinois | |
| Standard Parking Corporation IL | Delaware | |
| SP Plus Corporation Canada | Canada | |
| SP Plus Corporation du Canada | Quebec, Canada | |
| SP Plus Security Canada, Ltd. | Canada | |
| SP Plus Property Management, Inc. | Delaware | |
| SP Plus Fleet Services, Inc. | Delaware | |
| Central Parking System, Inc. | Tennessee | |
| Central Parking System of Connecticut, Inc. | Tennessee | |
| Central Parking System of Georgia, Inc. | Tennessee | |
| Central Parking System of Maryland, Inc. | Tennessee | |
| Central Parking System of Puerto Rico | Tennessee | |
| Central Parking System of Washington, Inc. | Tennessee | |
| Central Parking System of New York, Inc. | Tennessee | |
| Central Parking System Reality of New York, Inc. | Tennessee | |
| USA Parking System, Inc. | Tennessee | |
| KCPC Holdings, Inc. | Delaware | |
| LLCs and PARTNERSHIPS | JURISDICTION | |
| APCOA LaSalle Parking Company, LLC | Louisiana | |
| APCOA Bradley Parking Company, LLC | Connecticut | |
| Parking Data Ventures, LLC | Delaware | |
| Bradley Airport Parking, LP | Delaware | |
| Kinney System, Inc. | Delaware | |
| Central Parking System of Mississippi, LLC | Tennessee | |
| Central Parking System of Missouri, LLC | Tennessee | |