Social worker’s salary in the United States is around $48,302 per annum according to the BLS salary reports. The annual salary for the upper 10 percent social workers is around more than $70,390 per year, while the lower 10 percent of them earn less than $26,710 per year.n average salary for a social worker in the United States ranges from between $29,429 – $60,290 per annum and a yearly bonus of around $1, 545 will be included. The yearly profit sharing is around $5,575 per year.