Discover Sierra County, NM Get the Facts & Find Answers Explore comprehensive information and resources about facts concerning Sierra County, NM. Contact Name Email Address Message Upload information File InputChoose FilesNo Files ChosenAccepted file types: jpg, jpeg, jpe, gif, png, tiff, tif, mp3, m4a, m4b, pdf, doc, pot, pps, ppt, docx, xlsx, odt, ods, numbers, pages. Max. file size: 20 MB 11 + 7 = Submit