Could Silas be the perfect name for your baby boy? The baby boy name Silas is 5 letters long, and contains 2 vowel(s) and 3 consonant(s). Silas is a baby boy name that starts with the letter S and ends in the letter S. The baby boy name Silas has a popularity of 91% and is ranked 87 in the list of top 1000 most popular baby boy names. If Silas isn't the ideal name for your baby boy then take a look here for some randomly generated names. Hopefully you'll find a more suitable first name for your baby boy than Silas!