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We present a tally of Milky Way late-type dwarf stars in 68 WFC3pure-parallel fields (227 arcmin^2) from the Brightest of Reionizing Galaxies(BoRG) survey for high-redshift galaxies. Using spectroscopically identifiedM-dwarfs in two public surveys, the CANDELS and the ERS mosaics, we identify amorphological selection criterion using the half-light radius (r50), anear-infrared J-H, G-J color region where M-dwarfs are found, and a V-Jrelation with M-dwarf subtype. We apply this morphological selection of stellarobjects, color-color selection of M-dwarfs and optical-near-infrared colorsubtyping to compile a catalog of 274 M-dwarfs belonging to the disk of theMilky Way with a limiting magnitude of m_F125W < 24.  Based on the M-dwarfs statistics, we conclude that (a) the previouslyidentified North/South discrepancy in M-dwarf numbers persists in our sample;there are more M-dwarfs in the Northern fields on average than in Southernones, (b) the Milky Way's single disk scale-height for M-dwarfs is 0.3-4 kpc,depending on sub-type, (c) {\bf ERRATUM:} we present corrected coordinates(AstroPy) and distances and find a constant $z_0$=600 pc for all types. (d) asecond component is visible in the vertical distribution, with a different,much higher scale-height. We report the M-dwarf component of the Sagittariusstream in one of our fields with 11 confirmed M-dwarfs, 7 of which are at thestream's distance.  The dwarf scale-height and the relative low incidence in our fields of L- andT-dwarfs in these fields makes it unlikely that these stars will be interlopersin great numbers in color-selected samples of high-redshift galaxies. Therelative ubiquity of M-dwarfs however will make them ideal tracers of GalacticHalo substructure with EUCLID and reference stars for JWST observations.

Milky Way Red Dwarfs in the BoRG Survey; Galactic scale-height and the distribution of dwarfs stars in WFC3 imaging