Do immigration service centers in the United States allocate the same number of immigrants?

It's different. The number of immigrant places allocated by immigration service centers in the United States is different. The allocation of immigration quotas depends on different immigration categories, quotas of countries or regions and changes in immigration policies. The United States Congress adjusts and allocates the number of immigrants every year according to the needs of immigration policy. Therefore, different immigration service centers will allocate different numbers of immigration places according to changes in demand and policies.