3 0 ▁established ▁a ▁to b acco ▁ins pection ▁w are house ▁at ▁A yle tt ' s . ▁A yle tt ' s ▁daughters ▁inter mar ried ▁with ▁other ▁Northern ▁Ne ck ▁families . ▁ ▁English ▁colon ists ▁formed ▁King ▁William ▁County ▁in ▁ 1 7 0 2 ▁out ▁of ▁King ▁and ▁Queen ▁County . ▁ ▁The ▁county ▁is ▁named ▁for ▁William ▁of ▁Orange , ▁King ▁of ▁England . ▁ ▁The ▁Cour th ouse , ▁built ▁in ▁ 1 7 2 5 , ▁is ▁the ▁oldest ▁cour th ouse ▁in ▁continuous ▁use ▁in ▁the ▁United ▁States . ▁ ▁Geography ▁According ▁to ▁the ▁U . S . ▁Census ▁Bureau , ▁the ▁county ▁has ▁a ▁total ▁area ▁of ▁, ▁of ▁which ▁ ▁is ▁land ▁and ▁ ▁( 4 . 1 %) ▁is ▁water . ▁King ▁William ▁County ▁is ▁bounded ▁by ▁the ▁Matt ap oni ▁River ▁to ▁the ▁north ▁and ▁the ▁Pam un key ▁River ▁to ▁the ▁south . ▁The ▁two ▁rivers ▁combine ▁to ▁form ▁the ▁York ▁River , ▁at ▁West ▁Point , ▁the ▁county ' s ▁largest ▁town . ▁ ▁Ad j acent ▁count ies ▁ ▁Caroline ▁County ▁- ▁north west ▁ ▁King ▁and ▁Queen ▁County ▁- ▁n ortheast ▁ ▁New ▁Kent ▁County ▁- ▁south ▁ ▁Han over ▁County ▁- ▁south west ▁ ▁Major ▁High ways ▁ ▁Dem ograph ics ▁ ▁As ▁of ▁the ▁ 2 0 1 0 ▁United ▁States ▁Census , ▁there ▁were ▁ 1 5 , 9 3 5 ▁people ▁living ▁in ▁the ▁county . ▁ 7 7 . 2 %