4 listings in Kingsport, 3 of them farmers markets. 1 has a market day and hours from a public register or the market's own website, and 1 appears in the USDA SNAP retailer register. Market days in Kingsport: Wednesday (1), Saturday (1).
Few Kingsport listings have a schedule or SNAP authorization we could source. Johnson City, 17 miles away, has 7 listings with more sourced detail; see also all of Tennessee.