The v = 1-0 infrared absorption bands of the 12C 32S, 12C 33S, 12C 34S, and 13C 32S isotopes and the v = 2-1 "hot" band of 12C 32S all in the ground electronic state were measured using a high-resolution Fourier transform spectrometer coupled to a long-path absorption cell. P- and R-branch transitions, up to J = 41 for 12C 32S, have been measured at 0.004 cm -1 unapodized resolution. Rotational and centrifugal distortion parameters which are improved over those obtained in previous diode laser measurements for the less abundant 12C 33S and 13C 32S isotopes are reported. Improved v = 1-0 band origins of the various isotopes are also reported. Analysis included published microwave data along with the present IR measurements. The present results are compared with previous infrared diode laser, Fourier transform spectrometer, and microwave measurements.