classes of post offices

classes of post offices Sec. 801. At the beginning of each fiscal year, the Postmaster General shall divide post offices into four classes on the basis of gross annual postal receipts for the preceding calendar year. He shall place in the first class those post offices at which such receipts are $40,000 or more. He shall place in the second class those post offices at which such receipts are $8,000 or more, but less than $40,000. He shall place in the third class those post offices at which such receipts are $1,500 or more, but less than $8,000. He shall place in the fourth class those offices at which such receipts are less than $1,500. except as provided in section 303 (g).