Ecatepec (Spanish: [ekateˈpek] (listen)), once officially Ecatepec de Morelos, is a city and municipality in the State of Mexico. Both are usually known simply as "Ecatepec". The city is practically co-extensive with the municipality, with the city's 2005 population of 1,687,549 being 99.9% of the total municipal population of 1,688,258.[2] The provisional population at the 2010 Census was 1,658,806.