Tabulated data of electron swarm transport coefficients in carbon monoxide (CO) at 293.15 K obtained by solving the electron Boltzmann equation (BE) in density gradient (DG) representation (method BE DG) using the electron collision cross section data released by S. Biagi in Magboltz v11.11 (edition of 25 Jan 2021), https://magboltz.web.cern.ch/magboltz/. The data table includes the reduced electric field, E/N [Td], and the electron swarm transport coefficients mean energy, U_e [eV], bulk longitudinal characteristic energy, D_L/mu [eV], bulk transversal characteristic energy, D_T/mu [eV], flux drift velocity, W^* [m/s], bulk drift velocity, W [m/s], gas density times flux longitudinal diffusion coefficient, N D_L^* [m^{-1} s^{-1}], gas density times bulk longitudinal diffusion coefficient, N D_L [m^{-1} s^{-1}], gas density times flux transverse diffusion coefficient, N D_T^* [m^{-1} s^{-1}], gas density times bulk transverse diffusion coefficient, N D_T [m^{-1} s^{-1}], ionization rate coefficient, k_i [m^{3}/s], attachment rate coefficient, k_a [m^{3}/s], and reduced effective SST ionization coefficient, alpha_eff/N(Hydro) [m^{2}].