▁and ▁Indian ▁War , ▁France ▁secret ly ▁c eded ▁New ▁France ▁to ▁Spain , ▁per ▁the ▁Tre aty ▁of ▁Font aine ble au . ▁▁ 1 9 th ▁century ▁In ▁ 1 8 0 2 , ▁Spain ▁returned ▁most ▁of ▁the ▁land ▁to ▁France , ▁but ▁keeping ▁title ▁to ▁about ▁ 7 , 5 0 0 ▁square ▁miles . ▁ ▁In ▁ 1 8 0 3 , ▁most ▁of ▁the ▁land ▁for ▁modern ▁day ▁Kansas ▁was ▁acquired ▁by ▁the ▁United ▁States ▁from ▁France ▁as ▁part ▁of ▁the ▁ 8 2 8 , 0 0 0 ▁square ▁mile ▁Louisiana ▁P urchase ▁for ▁ 2 . 8 3 ▁c ents ▁per ▁a cre . ▁ ▁In ▁ 1 8 5 4 , ▁the ▁Kansas ▁Territ ory ▁was ▁organized , ▁then ▁in ▁ 1 8 6 1 ▁Kansas ▁became ▁the ▁ 3 4 th ▁U . S . ▁state . ▁ ▁In ▁ 1 8 5 5 , ▁C off ey ▁County ▁was ▁established . ▁ ▁Geography ▁According ▁to ▁the ▁U . S . ▁Census ▁Bureau , ▁the ▁county ▁has ▁a ▁total ▁area ▁of ▁, ▁of ▁which ▁ ▁is ▁land ▁and ▁ ▁( 4 . 2 %) ▁is ▁water . ▁ ▁Ad j acent ▁count ies ▁ ▁Os age ▁County ▁( n orth ) ▁ ▁Franklin ▁County ▁( n ortheast ) ▁ ▁Anderson ▁County ▁( east ) ▁ ▁Allen ▁County ▁( s out heast ) ▁ ▁Wood son ▁County ▁( s outh ) ▁ ▁Green wood ▁County ▁( s outh west ) ▁ ▁Lyon ▁County ▁(