The mills listed here are the buyers at the end of the line for South Carolina wood. A landowner rarely sells straight to one: a mill buys wood delivered to its gate, and getting trees there takes a logging crew, so the offer in front of you normally comes from a logger, a timber dealer, or a consulting forester selling on your behalf. Which mills sit within reach of your county is what decides who those bidders are and what they can afford to pay.
Haul distance is why a state mill list is worth anything to a seller. Trucking comes out of the same load the timber does, so a tract twenty minutes from a mill is worth more than the identical tract two hours away - same trees, different cheque. This page carries 95 facilities across 38 counties, 94 of them on the map above, so you can see what sits within working distance of your ground before anyone quotes you a number.
35 of the 95 South Carolina listings are sawmills, alongside 31 other processors, 13 mulch plants, 10 chip mills, and a few other plant types. Tops and small stems are sold as pulpwood, and the 10 chip mills, 7 pulp & paper mills, and 2 pellet & energy plants on this page are where that wood is taken. The South Carolina sources go no further than hardwood and softwood, so read the species line as a starting point rather than a specification. A stand is usually worth sorting into products - pulpwood, chip-n-saw, sawtimber, and veneer where the logs justify it - rather than selling the lot as one thing, and the mill type and species lines on every card below are where working that out starts.
Whoever ends up cutting it, run a process instead of taking the first offer. Hire a consulting forester who works for you, have the timber cruised and marked so every buyer is bidding on the same defined lot, then take sealed bids opened on a stated date. One unsolicited offer is a price, not the price. The landowner's guide walks the whole sale in the order it happens, and sealed bidding is how you put one tract in front of several buyers at once.
The South Carolina sources do not separate the species these plants take past hardwood and softwood, so the species line on a card is a hint rather than a specification. The species guides are where that gets settled: what each tree is cut for, how it is graded, and which ones carry a premium worth marking a stand for.
South Carolina Forestry Commission publishes the South Carolina timber price report. Updated quarterly. Those figures are published under a licence that does not allow anybody to reprint them, so the report has to be read at the source rather than copied onto a page like this one - which is what the page on timber prices in South Carolina does: it names the publisher and links the current edition, and prints no number of its own. A state average is still not your cheque - species, county, and which mills are buying this quarter decide that, which is the argument the market board makes at length.
A mill does not care which side of a state line your county is on, and neither should the search. Georgia's 248 listings and North Carolina's 245 listings sit across South Carolina's own borders, and the state-by-state index carries every state covered so far. If your ground is within a couple of hours of a line, read both.