▁County ▁compr ises ▁the ▁But te - Sil ver ▁Bow , ▁M T ▁Mic ropol itan ▁Statist ical ▁Area . ▁ ▁Geography ▁According ▁to ▁the ▁US ▁Census ▁Bureau , ▁the ▁county ▁has ▁an ▁area ▁of ▁, ▁of ▁which ▁ ▁is ▁land ▁and ▁ ▁( 0 . 0 8 %) ▁is ▁water . ▁It ▁is ▁Mont ana ' s ▁smallest ▁county ▁by ▁area . ▁ ▁Major ▁high ways ▁▁ ▁Inter state ▁ 1 5 ▁ ▁Inter state ▁ 9 0 ▁ ▁Inter state ▁ 1 1 5 ▁ ▁U . S . ▁Highway ▁ 1 0 ▁( Form er ) ▁ ▁U . S . ▁Highway ▁ 9 1 ▁ ▁Mont ana ▁Highway ▁ 2 ▁ ▁Mont ana ▁Highway ▁ 4 1 ▁ ▁Mont ana ▁Highway ▁ 4 3 ▁ ▁Mont ana ▁Highway ▁ 5 5 ▁ ▁Ad j acent ▁count ies ▁ ▁De er ▁L odge ▁County ▁- ▁north west ▁ ▁Jefferson ▁County ▁- ▁east ▁ ▁Mad ison ▁County ▁- ▁south ▁ ▁Be aver head ▁County ▁- ▁south west ▁ ▁National ▁protected ▁areas ▁Be aver head ▁National ▁Forest ▁( part ) ▁De er l odge ▁National ▁Forest ▁( part ) ▁ ▁Dem ograph ics ▁▁ 2 0 0 0 ▁census ▁As ▁of ▁the ▁ 2 0 0 0 ▁United ▁States ▁Census , ▁there ▁were ▁ 3 4 , 6 0 6 ▁people , ▁ 1 4 , 4 3 2 ▁households , ▁and ▁ 8 , 9 3 3 ▁families ▁living ▁in ▁the ▁county . ▁The ▁population ▁density ▁was ▁ 4 8 ▁people