The mills listed here are the buyers at the end of the line for Wyoming 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 30 facilities across 12 counties, all of them on the map above, so you can see what sits within working distance of your ground before anyone quotes you a number.
12 of the 30 Wyoming listings are post & pole plants, alongside 12 sawmills, 2 log home plants, 1 firewood producer, and a few other plant types. Tops and small stems are sold as pulpwood, and the 1 pellet & energy plant on this page are where that wood is taken. The Wyoming 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 Wyoming 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.
Asked what timber is worth in Wyoming, this site will not guess: no state price report could be confirmed, so timber prices in Wyoming says exactly that instead of publishing a number nobody stands behind. The real answer is what the mills on this page will bid on your county, and the market board explains why a load of logs has no world price to look up.
A mill does not care which side of a state line your county is on, and neither should the search. Montana's 99 listings, Colorado's 58 listings and South Dakota's 9 listings sit across Wyoming'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.