George Orwell lives, in the mailboxes of Charles M. Sylvester and Donald A. Norberg.

Three times in recent weeks, Sylvester, who lives in Wheaton, wrote to President Reagan to disagree with his policies.

The first letter disagreed with the President's views on Social Security benefits. The second criticized his call for economic sacrifice in light of the new china he and his wife were buying. The third took issue with the Reagan budget package.

To each of Sylvester's first two letters, the White House responded with an identical form letter.

It thanked the President's puzzled antagonist for his support.

There's been no response to the third letter yet.

Sylvester isn't sure he wants one.

Meanwhile, on Calvert Street NW, Donald Norberg discovered a form letter from D.C. postmaster John Cochran in his mailbox the other day. It asked how Norberg liked his postal service.

Pretty well, Norberg replied. "I described the carriers who serve my building as efficient and courteous," he writes. "I cited the clerks at the nearby branch post office for the patience and kindness they showed in dealing with the sometimes slow-moving and slow-reacting aged, and with visitors from overseas staying at hotels in the area."

Back came a form letter from Cochran:

"I was disappointed to learn of the service problems you have been experiencing, and we regret the inconveniences. After reviewing the service problems you described, I asked the postal managers responsible in those areas to investigate and take whatever actions are necessary . . . . "

Asks Norberg: "Is Mr. Cochran the Johnny who can't read?"