X-ray diffraction, bulk magnetization, and $^{57}\mathrm{Fe}$ M\ossbauer spectroscopic measurements on ${\mathrm{Fe}}_{1+\mathrm{x}}$Sb system for various values of x (0.14\ensuremath{\le}x\ensuremath{\le}0.35) are reported. The x-ray data suggest that the ASTM (American Society for Testing and Materials) data file for ${\mathrm{Fe}}_{1+\mathrm{x}}$Sb should be modified. The lattice N\'eel temperatures obtained from magnetic susceptibility and M\ossbauer spectroscopic measurements are in nice agreement with each other and decrease linearly with increase in x. The N\'eel temperatures for the ordering of interstitial Fe atoms are higher than 60 K and increase with x. The low-temperature M\ossbauer spectra have been analyzed in terms of a Lorentzian distribution of the magnetic hyperfine field at lattice sites, a low-field site, and a relatively high-field interstitial site. Also included are comments on the low magnetic moment of Fe in ${\mathrm{Fe}}_{1+\mathrm{x}}$Sb.