. ▁Its ▁northern ▁boundary ▁is ▁the ▁tid al ▁Cal o os ah atch ee ▁River , ▁across ▁which ▁is ▁the ▁city ▁of ▁Cape ▁Cor al . ▁The ▁southern ▁edge ▁of ▁the ▁community ▁is ▁Summer lin ▁Road ▁( Count y ▁Road ▁ 8 6 9 ). ▁McG reg or ▁Bou lev ard ▁cross es ▁the ▁community ▁from ▁n ortheast ▁to ▁south west . ▁I ona ▁is ▁ ▁n ortheast ▁of ▁the ▁cause way ▁to ▁San ib el ▁Island ▁and ▁ ▁south west ▁of ▁the ▁center ▁of ▁Fort ▁My ers . ▁ ▁According ▁to ▁the ▁United ▁States ▁Census ▁Bureau , ▁the ▁I ona ▁CD P ▁has ▁a ▁total ▁area ▁of ▁, ▁of ▁which ▁ ▁are ▁land ▁and ▁, ▁or ▁ 3 5 . 3 2 %, ▁are ▁water , ▁primarily ▁in ▁the ▁Cal o os ah atch ee ▁River ▁est u ary . ▁ ▁Dem ograph ics ▁ ▁As ▁of ▁the ▁census ▁of ▁ 2 0 0 0 , ▁there ▁were ▁ 1 1 , 7 5 6 ▁people , ▁ 6 , 0 2 3 ▁households , ▁and ▁ 3 , 7 4 0 ▁families ▁res iding ▁in ▁the ▁CD P . ▁ ▁The ▁population ▁density ▁was ▁ 1 , 6 4 8 . 5 ▁people ▁per ▁square ▁mile ▁( 6 3 6 . 6 / km ²). ▁ ▁There ▁were ▁ 9 , 2 9 0 ▁housing ▁units ▁at ▁an ▁average ▁density ▁of ▁ 1 , 3 0 2 . 7 / sq   mi ▁( 5 0 3 . 1 / km