ro qu ois ▁County , ▁Illinois , ▁United ▁States , ▁along ▁the ▁I ro qu ois ▁River . ▁As ▁of ▁the ▁ 2 0 1 0 ▁census ▁the ▁population ▁was ▁ 1 5 4 , ▁down ▁from ▁ 2 0 7 ▁at ▁the ▁ 2 0 0 0 ▁census . ▁ ▁Geography ▁I ro qu ois ▁is ▁located ▁in ▁eastern ▁I ro qu ois ▁County ▁at ▁ 4 0 ° 4 9 ' 4 0 " ▁North , ▁ 8 7 ° 3 5 ' 1 " ▁West ▁( 4 0 . 8 2 7 8 8 0 , ▁- 8 7 . 5 8 3 5 9 1 ). ▁It ▁s its ▁on ▁the ▁north ▁side ▁of ▁the ▁I ro qu ois ▁River , ▁a ▁west - flow ing ▁trib ut ary ▁of ▁the ▁K ank ake e ▁River ▁and ▁part ▁of ▁the ▁Illinois ▁River ▁waters hed . ▁ ▁U . S . ▁Route ▁ 5 2 ▁passes ▁through ▁the ▁village , ▁leading ▁south ▁ ▁to ▁Sh eld on ▁and ▁north west ▁the ▁same ▁distance ▁to ▁Don ovan . ▁The ▁Indiana ▁border ▁is ▁ ▁to ▁the ▁east ▁via ▁County ▁Highway ▁ 3 1 . ▁ ▁According ▁to ▁the ▁ 2 0 1 0 ▁census , ▁I ro qu ois ▁has ▁a ▁total ▁area ▁of ▁, ▁all ▁land . ▁ ▁Dem ograph ics ▁ ▁In ▁the ▁census ▁of ▁ 2 0 0 0 , ▁there ▁were ▁ 2 0 7 ▁people , ▁ 8 4 ▁households , ▁and ▁ 6 5 ▁families ▁in