We present Spitzer /IRAC and MIPS 24 \micron archival observations for 28 brown dwarfs in the Upper Scorpius ( UppSco ) region .
We find a disk fraction of 10.7 % ^ { +8.7 \% } _ { -3.3 \% } .
One object shows a small excess at 24 \micron but none at shorter wavelengths , and may be a candidate transition disk .
Three objects show emission in the 10 \micron silicate feature and we present compositional fits for these sources .
Flat structures are observed for all disk sources in UppSco .
Also presented are the MIPS/70 \micron observations for the TW Hydrae Association brown dwarf 2MASS J1139511-315921 .
We discuss the structure and chemistry of brown dwarf disks at ages of \sim 5-10 Myr , and consider the possible effects of the brown dwarf densities in these clusters on the disk lifetimes .