Grant County, Oregon Zip Codes

Zip Code	City	Population
97845	John Day	2,300
97820	Canyon City	1,137
97865	Mount Vernon	1,133
97869	Prairie City	938
97856	Long Creek	498
97825	Dayville	407
97877	Sumpter	319
97864	Monument	295
97848	Kimberly	215
97873	Seneca	167
97817	Bates	37

Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.