▁York ▁County ▁D ills burg , ▁bor ough ▁East ▁Pro spect , ▁bor ough ▁Em ig sv ille , ▁CD P ▁Frank lint own , ▁bor ough ▁Glen ▁Rock , ▁ ▁bor ough ▁Hall am , ▁ ▁bor ough ▁Jacob us , ▁ ▁bor ough ▁Log an ville , ▁ ▁bor ough ▁New ▁S alem , ▁ ▁bor ough ▁Stewart st own , ▁bor ough ▁Valley ▁View , ▁CD P ▁Well sv ille , ▁ ▁bor ough ▁W inds or , ▁ ▁bor ough ▁Winter st own , ▁bor ough ▁York ana , ▁ ▁bor ough ▁ ▁Pennsylvania ▁exc la ves ▁that ▁are ▁not ▁enc la ves ▁ ▁To ▁be ▁a ▁true ▁exc lave , ▁all ▁potential ▁paths ▁of ▁travel ▁from ▁the ▁exc lave ▁to ▁the ▁main ▁region ▁must ▁cross ▁over ▁the ▁territory ▁of ▁a ▁different ▁region ▁or ▁regions ▁having ▁the ▁equivalent ▁government al ▁administrative ▁level . ▁Two ▁municipal ities ▁of ▁Ber ks ▁County ▁have ▁exc la ves . ▁Lower ▁Als ace ▁Township ▁has ▁a ▁southern ▁portion ▁that ▁is ▁dis connected ▁from ▁the ▁main ▁portion ▁of ▁the ▁town ship ▁by ▁Reading ▁and ▁Mount ▁P enn . ▁C um ru ▁Township ▁has ▁two ▁exc la ves , ▁one ▁that ▁is ▁an ▁enc lave ▁of ▁Reading ▁and ▁one ▁that ▁is ▁surrounded ▁by ▁Reading ▁and ▁West ▁Reading . ▁B irmingham ▁Township ▁and ▁Ch ester ▁County ▁have ▁an ▁exc lave ▁along ▁a ▁b end ▁in ▁the ▁Brand yw ine ▁Creek ▁that ▁borders ▁the ▁state ▁of ▁Del aware ▁to ▁the ▁south ▁and ▁is ▁surrounded ▁by ▁Ch add s