Other uses of the comma

Separate a city from a state, province, region or country with a comma.

Exemple adequatChicago, Illinois
Exemple adequatLisbon, Portugal


Do not use a comma between the month and the year.

Exemple no admissibleOctober, 2001
Exemple adequatOctober 2001


In most numbers of one thousand or more, use commas between groups of three digits.

Exemple adequat62,242
Exemple adequat1,723
Exemple adequat1,000,000


Exceptions are degree temperatures, years, addresses, page numbers and other uses of numbers for a non-quantifying purpose (see Numbers and punctuation).

Universitat de Barcelona. Serveis Lingüístics
Darrera actualització: 6-2-2023
Recommended citation:
«Other uses of the comma» [en línia]. A: Llibre d’estil de la Universitat de Barcelona. Barcelona: Universitat de Barcelona. Serveis Lingüístics. <https://www.ub.edu/llibre-estil/criteri.php?id=2319> [consulta: 23 abril 2024].