  We investigate mechanically exfoliated thin 1T-TaS$_2$ with scanning
tunneling microscopy at room temperature. Sample preparation without air
exposure enables access to intrinsic charge-density-wave (CDW) phases of thin
1T-TaS$_2$. At room temperature, we can observe the expected nearly
commensurate CDW (NCCDW) phase on thin flakes similar to bulk 1T-TaS$_2$.
Further analysis reveals that the CDW domains in the NCCDW phase become smaller
and have more anisotropic shape with decreasing thickness in the range of 8-28
layers. Our findings demonstrate that the anisotropic CDW nature of thin
1T-TaS$_2$ would be crucial to understand its exotic CDW-related phenomena and
demand a systematic study on its correlation between the thickness-driven CDW
domain anisotropy and the intermediate CDW states in thin 1T-TaS$_2$.
