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We present direct detection constraints on the absorption of hidden-photondark matter with particle masses in the range 1.2-30 eV$c^{-2}$ with the DAMICexperiment at SNOLAB. Under the assumption that the local dark matter isentirely constituted of hidden photons, the sensitivity to the kinetic mixingparameter $\kappa$ is competitive with constraints from solar emission,reaching a minimum value of 2.2$\times$$10^{-14}$ at 17 eV$c^{-2}$. Theseresults are the most stringent direct detection constraints on hidden-photondark matter in the galactic halo with masses 3-12 eV$c^{-2}$ and the firstdemonstration of direct experimental sensitivity to ionization signals $<$12 eVfrom dark matter interactions.

First Direct-Detection Constraints on eV-Scale Hidden-Photon Dark Matter with DAMIC at SNOLAB