  The Milky Way is a barred galaxy whose central bulge has a box/peanut shape
and consists of multiple stellar populations with different orbit
distributions. This review describes dynamical and chemo-dynamical equilibrium
models for the Bulge, Bar, and inner Disk based on recent survey data. Some of
the highlighted results include (i) stellar mass determinations for the
different Galactic components, (ii) the need for a core in the dark matter
distribution, (iii) a revised pattern speed putting corotation at ~6 kpc, (iv)
the strongly barred distribution of the metal-rich stars, and (v) the radially
varying dynamics of the metal-poor stars which is that of a thick disk-bar
outside ~1 kpc, but changes into an inner centrally concentrated component with
several possible origins. On-going and future surveys will refine this picture,
making the Milky Way a unique case for studying how similar galaxies form and
evolve.

Astrophysics of Galaxies