  Accurate characterization of stellar populations is of prime importance to
correctly understand the formation and evolution process of our Galaxy. The
field of asteroseismology has been particularly successful in such an endeavor
providing fundamental parameters for large samples of stars in different
evolutionary phases. We present our results on determinations of masses, radii,
and distances of stars in the CoRoT and Kepler fields, showing that we can map
and date different regions of the galactic disk and distinguish gradients in
the distribution of stellar properties at different heights. We further review
how asteroseismic determinations can produce a unique set of constraints,
including ages, outside the solar neighborhood for galactic chemical evolution
models.
