Martell is a census-designated place in Amador County, California, United States. It is located 1.5 miles northwest of Jackson, at an elevation of 1486 feet. The population was 282 at the 2010 census. Martell is located west of Jackson and east of Ione, by which it is connected by the Amador Central Railroad. Martell is where several major retail and restaurant outlets for Amador County are located. The community is in ZIP code 95654 and area code 209.