As of 591 CY, the population of Gran March totaled 254,600 persons, the vast majority (almost 80%) being humans of mainly Suel and Oeridian descent.
The most popular deities among Gran March's citizens are Heironeous, St. Cuthbert, Pholtus, Fharlanghn, Zilchus, the Oeridian agricultural gods, Phyton, and Obad-Hai.