Stellar mass and number density of quiescent and star-forming galaxies. The left panel shows the stellar mass density for total quiescent and star-forming population and for the B/T-selected quiescent samples for log(M_★/M_⊙) > 8. It also includes a literature comparison from recent observational studies. The right panel shows the number densities of galaxies with log(M_★/M_⊙) > 10 selected using the NUVrJ rest-frame colors and an sSFR/yr⁻¹ < 0.2/t_H(z) selection for the quiescent population from our work. We compare them with a compilation of simulations (lines) and observations (symbols with error bars). All are selected to have log(M_★/M_⊙) > 10, but the quiescent classification varies for the different observational works. In the simulations, quiescent galaxies are classified as sSFR < 5 × 10⁻¹¹ yr⁻¹ and include uncertainties by convolving the stellar masses with Gaussian-distributed errors with a width of 0.3 dex. In our work, the sSFR selection yields n_gal lower by ∼0.2 − 0.5 dex at z ≳ 4 than the NUVrJ selection.