| Abbreviation | Definition |
|---|---|
| CPEP | County Product Enrichment Program |
| CPF | County Pension Fund |
| CR | County Road |
| CRAB | County Road Administration Board |
| CSAC | California State Association of Counties |
| CSAH | County State Aid Highways |
| CSB | County of San Bernardino |
| CSBC | Catholic Schools of Broome County |
| CSC | County Stamp Center |
| CSC | CSC Stands for County |
| CSFC | Counties Sports Fishing Club |
| CSVC | Community Services of Venango County |
| CSW | County Station Wagon |
| CTAS | County Technical Assistance Service |
| CTBB | County Training Brass Band |
| CTH | County Trunk Highway |
| CTIB | Counties Transit Improvement Board |
| CTOC | Cognitive Therapy Orange County |
| CTP | County Transportation Program |
| CUW | County United Way |