Résumé : The relativistic multiconfiguration Dirac-Hartree-Fock and the nonrelativistic multiconfiguration Hartree-Fock methods have been employed to calculate the magnetic dipole and electric quadrupole hyperfine structure constants of zinc. The calculated electric field gradients for the 4s4pP1o3 and 4s4pP2o3 states, together with experimental values of the electric quadrupole hyperfine structure constants, made it possible to extract a nuclear electric quadrupole moment Q(Zn67)=0.122(10) b. The error bar was evaluated in a quasistatistical approach - the calculations were carried out with 11 different methods, and then the error bar was estimated from the differences between the results obtained with those methods.