 Abuja has witnessed a huge influx of people into the city; the growth has led to the emergence of satellite towns, such as Karu Urban Area, Suleja, Gwagwalada, Lugbe, Kuje and smaller settlements towards which the planned city is sprawling.The urban agglomeration centred upon Abuja had a population estimated at 2,440,000 in 2014.The metropolitan area of Abuja was estimated in 2016 as six million persons, the country's second most populous metro area.