The third full cycle of annual inventories (2009-2013) of Missouri's forests, completed in 2013, reports that there are an estimated 15.5 million acres of forest land in the State. An estimated 60 percent of the forest land area is in sawtimber size stands, 30 percent are pole timber size, and 10 percent are seedling/sapling size or nontstocked [sic]. The net volume of live trees on forest land increased by 4 percent, from 20.1 million cubic feet in 2008, to 21.0 million cubic feet in 2013. Average annual net growth of live trees on forest land decreased by more than 25 percent, from an average of 36 cubic feet per acre in 2008, to an average of 26 cubic feet per acre in 2013. This report includes additional information on forest attributes, land-use change, carbon, and forest health. In addition to this document, Missouri Forests 2013: Statistics, Methods, and Quality Assurance is online at https://doi.org/10.2737/NRS-RB-108. It contains 1) descriptive information on methods, statistics, and quality assurance of data collection, 2) a glossary of terms, 3) tables that summarize quality assurance, 4) a core set of tabular estimates for a variety of forest resources, 5) a set of user and database guides for P2, P3, and P2+, and 6) a Microsoft Access database that represents an archive of data used in this report, with tools that allow users to produce customized estimates.