  Infrared source counts at wavelengths 3 < lambda < 10 um cover more than 10
magnitudes in source brightness, four orders of magnitude in surface density,
and reach an integrated surface density of 10^5 sources/deg^2. At m<14 mag,
most of the sources are Galactic stars, in agreement with models. After removal
of Galactic stars, galaxy counts are consistent with what few measurements
exist at nearby wavelengths. At 3.6 and 4.5 um, the galaxy counts follow the
expectations of a Euclidean world model down to ~16 mag and drop below the
Euclidean curve for fainter magnitudes. Counts at these wavelengths begin to
show decreasing completeness around magnitude 19.5. At 5.8 and 8 um, the counts
relative to a Euclidean world model show a large excess at bright magnitudes.
This is probably because local galaxies emit strongly in the aromatic dust
(``PAH'') features. The counts at 3.6 um resolve <50% of the Cosmic Infrared
Background at that wavelength.
