| General Information | | |
| City Name | Diamond Bar | |
| State | California | |
| Population 2000 | 56,287 | |
| Housing Units | 17,959 | |
| Total Area | 15 square miles | |
| Water Area | square miles | |
| Land Area | 15 square miles | |
| Population Density | 3,813 people/square mile | |
| Housing Density | 1,217 units/square mile | |
| Law Enforcement Employees | | |
| Violent Crimes | 108 | |
| Murders/Manslaughters | 1 | |
| Forcible Rapes | 4 | |
| Robberies | 49 | |
| Aggravated Assaults | 54 | |
| Violent Crimes | 108 | |
| Property Crimes | 1,023 | |
| Burglaries | 311 | |
| Larceny Thefts | 591 | |
| Motor Vehicle Thefts | 121 | |
| Arsons | 4 | |