This manuscript presents for trans-1-chloro-3,3,3-trifluoroprop-1-ene [R1233zd(E)] 94 compressed liquid density data and 60 vapor phase PvT data. The compressed liquid density data were measured along nine isotherms in increments of 10 K from 283.15 to 363.15 K for pressures from near saturation to 35 MPa. The vapor phase PvT data were measured along seven isochores for temperatures from 308.15 to 373.15 K for pressures approximately from 167 to 693 kPa. The paper also includes correlations for saturated liquid density, compressed liquid density, and PvT in the vapor phase.