Tultepec is a city and municipality located in State of Mexico, Mexico. It lies directly north of the Federal District (Distrito Federal) in the northeastern part of the State of Mexico. making it is part of the Greater Mexico City urban area. The name comes from Náhuatl meaning 'hill of the tule plant'. The census of 2005 reported a population of 57,586 for the city and 110,145 for the municipality as a whole.