  Most of the mass of the Milky Way galaxy is contributed by its halo,
presumably in the form of non-interacting cold dark matter. The axion is a
compelling cold dark matter candidate. We report results from a search which
probes the local galactic halo axion density using the Sikivie RF cavity
technique. Candidates over the frequency range 550$$ $\le$ f $\le$$$ 810 MHz
(2.3$$ $\mu$eV $\le$$$ m$_{a}$ $\le$ 3.4 $\mu$eV) were investigated. The
absence of a signal suggests that KSVZ axions contribute no more than 0.45
GeV/cm$^3$ of mass density to the local dark matter halo over this mass range.
