Wikipedia doesn’t have a history of Martell yet. The photos, dates and memories neighbors add here are how it gets written.
Martell (formerly Oneida) is a census-designated place in Amador County, California, United States. It is located 1.5 miles (2.4 km) northwest of Jackson, at an elevation of 1486 feet (453 m). The population was 207 at the 2020 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.
Its first post office opened in 1905. Between the 2010 and 2020 censuses its population fell from 282 to 207 (-27%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Martell, 1905 to 1973
Woven from the archive, old maps, post office records, the National Register and the people born here.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From U.S. Geological Survey historical maps, the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.