Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_4255 ( "Name" text, "Family name" text, "Receptor" text, "Coreceptor" text, "Property" text, "Chromosomal location" text )

### Question ###
How many different chromosomal locations are there in the family il-1f8?

### Accurate SQL ###

SELECT COUNT("Chromosomal location") FROM table_4255 WHERE "Family name" = 'IL-1F8'