There are 43,560 square feet in an acre. This is equal to 1/640 of a square mile, or approximately 80 percent of the area of an American football field, including the end zones.
Kirkby is a name that was brought to England by the ancestors of the Kirkby family when they migrated to the region after the Norman Conquest in 1066. The Kirkby family lived at Kirkby in Furness. The name Kirkby means village with a church.
Kirkland is the former home of the Seattle Seahawks; the NFL team's headquarters and training facility were located at Northwest University prior to 2008. Warehouse chain Costco previously had its headquarters in Kirkland (now in Issaquah); the city is the namesake of its Kirkland Signature store brand.