  Source counts -- the number density of sources as a function of flux density
-- represent one of the fundamental metrics in observational cosmology due to
their straightforward and simple nature. It is an important tool that provides
information on galaxy formation and evolution. Source counting is a direct
measurement. Compared to advanced analyzes that require more observational
input such as luminosity/mass functions, it is less affected by any
cosmological parameter assumptions or any errors propagated from luminosities.
In this study, we present source counts at the six mid-infrared bands, i.e.,
7.7, 10, 12.8, 15, 18, and 21 $\mu$m from the MIR instrument of the James Webb
Space Telescope (JWST). Contrasted with the infrared source counts achieved by
prior generations of infrared space telescopes, our source counts delve up to
$\sim$100 times deeper, showcasing the exceptional sensitivity of the JWST, and
aligning with the model predictions based on preceding observations. In a
follow-up study, we utilize our source counts to establish a new IR galaxy
population evolutionary model that provides a physical interpretation.
