Dates

Use a comma between the day of the week and the month, between the day of the month and the year, and between the year and the rest of the sentence, if any.

Do not use commas with dates in inverted order or with dates consisting of only the month and the year.

She dated the letter 26 August 2008.

Thousands of Germans swarmed over the wall in November 1989.

Addresses and place-names

Use a comma after each part of an address or place-name, including the state if there is no ZIP code. Do not precede a ZIP code with a comma.

Titles

Use commas to set off a title such as MD or PhD from the name preceding it and from the rest of the sentence. The titles Jr. and Sr., however, often appear without commas.

Numbers

In numerals of five digits or more, use a comma between each group of three, starting from the right.

The city’s population rose to 158,000 in the 2000 census.

The comma is optional within numerals of four digits but never occurs in four-digit dates, street addresses, or page numbers.

The college had an enrollment of 1,789 [or 1789] in the fall of 2008.

My grandparents live at 2428 Loring Place.

Turn to page 1566.