▁of ▁the ▁Kingdom ▁of ▁Hung ary . ▁Its ▁territory ▁is ▁now ▁in ▁central ▁Hung ary , ▁compr ising ▁the ▁territory ▁of ▁the ▁present ▁Hung arian ▁county ▁P est ▁and ▁the ▁northern ▁part ▁of ▁present ▁B á cs - K isk un ▁county . ▁The ▁capital ▁of ▁the ▁county ▁was ▁Budapest . ▁ ▁Geography ▁P est - P ilis - Sol t - K isk un ▁county ▁shared ▁borders ▁with ▁the ▁count ies ▁Kom á rom , ▁Es z ter gom , ▁H ont , ▁N ó gr ád , ▁He ves , ▁J ász - N agy k un - S z ol n ok , ▁C song rá d , ▁B á cs - B od rog , ▁Tol na ▁and ▁Fe j ér . ▁Its ▁territory ▁covered ▁the ▁eastern ▁bank ▁of ▁the ▁river ▁Dan ube ▁from ▁Vis egr ád ▁in ▁the ▁north ▁to ▁( ex cluding ) ▁B aja ▁in ▁the ▁south , ▁stretch ing ▁to ▁the ▁river ▁T is za ▁in ▁the ▁east . ▁A ▁part ▁of ▁the ▁county ▁( P ilis ) ▁was ▁on ▁the ▁west ▁bank ▁of ▁the ▁Dan ube , ▁near ▁Budapest . ▁Its ▁area ▁was ▁ 1 2 , 2 2 8   km ² ▁around ▁ 1 9 1 0 . ▁ ▁History ▁The ▁count ies ▁P est ▁and ▁Pil is ▁were ▁formed ▁in ▁the ▁ 1 1 th ▁century . ▁P est ▁was ▁the ▁area ▁on ▁the ▁left ▁( east ) ▁bank . of ▁the ▁Dan ube ▁around ▁present - day ▁Budapest , ▁Pil