Unincorporated community in New Mexico, United States
Seneca is an unincorporated community in Union County, New Mexico, United States.[1] Seneca is located on New Mexico State Road 406, 12.6 miles (20.3 km) north-northeast of Clayton. Originally known as Cienaga, the name was corrupted by Anglophone settlers after the Civil War. The first postmaster was Flora Blackwell.[2]
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