Like cheese from cows milk, goat cheese can vary widely in its fat content. As a general rule of thumb, softer goat cheeses are made with skimmed goat milk and are lower in fat. These are in the 4 to 5 gram of fat per ounce range. The semi-soft goat cheeses are about 6-8 grams of fat per ounce.
When a cheese is aged it loses moisture and the fat content rises. Still, an aged goat cheese, with a flavor and texture similar to Parmesan, is only about 9 grams per ounce, where the Parmesan can be up to 12 grams per ounce.