| General Information | | |
| City Name | Islip | |
| State | New York | |
| Population 2000 | 20,536 | |
| Housing Units | 7,026 | |
| Total Area | 6 square miles | |
| Water Area | square miles | |
| Land Area | 5 square miles | |
| Population Density | 3,809 people/square mile | |
| Housing Density | 1,301 units/square mile | |
| Law Enforcement Employees | | |
| Violent Crimes | | |
| Murders/Manslaughters | | |
| Forcible Rapes | | |
| Robberies | | |
| Aggravated Assaults | | |
| Violent Crimes | | |
| Property Crimes | | |
| Burglaries | | |
| Larceny Thefts | | |
| Motor Vehicle Thefts | | |
| Arsons | | |