We report experimental (p, rho, T) data of methanol over the temperature range from 283 to 423 K at pressures between 5 and 90 MPa. Measurements were carried out with a high-pressure vibrating-tube densimeter (VTD), which was thoroughly calibrated using water, helium, and ethanol as reference fluids; propane was used for validation measurements. The liquid methanol sample with a purity of 99.93 mol % was decanted within an inert protective argon atmosphere and further degassed by several freeze-pump-thaw cycles. Considering the measurement uncertainties in temperature, pressure, and oscillation period, as well as uncertainties resulting from the calibration and the impurities of the sample, the relative, combined expanded uncertainty (k = 2) in density was estimated to be in the range from 0.1380 to 0.1635%. Schilling-type and Tait-type correlation equations were regressed to the experimental densities with a maximum relative combined expanded uncertainty of 0.1662%. Furthermore, we discuss the utilization of an "artificial intelligence-powered" modeling tool within the process of fitting the Schilling-type equation and the extrapolation behavior of three fitted correlation equations.