
Grand County
- State:
- Colorado
- County Seat:
- Hot Sulphur Springs
Grand County's estimated 2025 population is 16,337 with a growth rate of 1.25% in the past year according to the most recent United States census data. Grand County is the 31st largest county in Colorado. The 2010 population was 14,795 and has seen a growth of 10.42% since that time.