The title insurance policy and the closing documents reference the specific property by legal description. Without a land survey the correct size or (acreage) is not known. The county does show acreage but it’s an estimate.
The county estimate assumes each section of ground is exactly 1 square mile and the lines run exactly North-South and East-West. Although this is the intention, the actual sections vary in size and orientation, due to the survey methods used in the early 1900’s.
Because the actual acreage is not known we do not add the estimate to the documents. Adding it would guarantee the buyer the estimated acreage is correct, and make the seller liable for that guarantee.