Only about 1.5 % of boys' first names in the United States begin with the letter F…
This means that the initial F is found much less frequently than average. On average, each letter appears as an initial in about 3.8 % of all boys' names, considering the 26-letter English alphabet. In fact, the letters that form initials aren’t distributed evenly – some initials are very common, while others are very rare. The most common initials among boys' names in the United States are J and A, while very few names begin with the letters U and X.