Using Commas in
Addresses and Dates
Use a comma between the city and state in a sentence.
We live in Lake Geneva, Wisconsin.
Do the same when you address an envelope. (Do not place a comma between the state and ZIP code.)
247 West Junction Rd.
Lake Geneva, WI 53001
Use a comma between the day and year in a sentence or letter heading.
We moved to our house on February 12, 2021.
Note: Do not use a comma between a month and year.