Are life insurance proceeds income tax exempt?

My son passed away in February. I have been appointed "Authorized Next of Kin" by the Surrogate Court. He had few assets and little money, less than $10,000 but his employer did provide a group life insurance plan for him valued at $200,000 but he listed no beneficiary. I plan on first paying his funeral expenses from this money and then dividing the balance between his mother, me and his two siblings. Will this disbursement be considered taxable income for us?