  Using Gaia DR2 data, we present an up-to-date sample of white dwarfs within
20 pc of the Sun. In total we identified 139 systems in Gaia DR2, nine of which
are new detections, with the closest of these located at a distance of 13.05
pc. We estimated atmospheric parameters for all stellar remnants based on the
Gaia parallaxes and photometry. The high precision and completeness of the Gaia
astrometry allowed us to search for wide binary companions. We re-identified
all known binaries where both components have accurate DR2 astrometry, and
established the binarity of one of the nine newly identified white dwarfs. No
new companions were found to previously known 20 pc white dwarfs. Finally, we
estimated the local white dwarf space-density to be
$(4.49\pm0.38)\times10^{-3}$ pc$^{-3}$, having given careful consideration to
the distance-dependent Gaia completeness, which misses known objects at short
distances, but is close to complete for white dwarfs near 20 pc.
