Leamington Spa, properly Royal Leamington Spa but commonly just Leamington or even "Leam" to locals, is a spa town in central Warwickshire, England. According to the 2001 census the town had a population of 45,114. It is named after the River Leam which flows through the town. Leamington lies near the centre of England. Indeed, a young tree called the Midland Oak, at Lillington, just to the northeast of the town centre, is marked by a plaque claiming that it is at the very centre of the country.