| Abbreviation | Definition |
|---|---|
| HCPAC | Hudson County Public Art Commission (New Jersey) |
| HCPC | Harris County Psychiatric Center |
| HCPD | Howard County Police Department |
| HCPL | Hancock County Public Library |
| HCPL | Hardin County Public Library |
| HCPL | Harford County Public Library |
| HCPL | Harris County Public Library |
| HCPL | Harrison County Public Library |
| HCPL | Henderson County Public Library |
| HCPL | Humphreys County Public Library |
| HCPLS | Hernando County Public Library System |
| HCPLS | Houston County Public Library System |
| HCPOA | Howard County Police Officers Association |
| HCPS | Halifax County Public Schools |
| HCPS | Harford County Public Schools |
| HCPS | Harris County Protective Services |
| HCPS | Henderson County Public Schools |
| HCPS | Henrico County Public Schools |
| HCPS | Henry County Public Schools |
| HCPS | Hillsborough County Public Schools |