The growth of the Hispanic population in Omaha began during the late 20th century, and the city now has a large Hispanic population. The majority of the Omaha population are people of European ancestry, and African Americans make up more than one tenth of the total population. In addition, Asian and Pacific Islander populations comprise a small portion of the population. Throughout its history, the city has had many ethnic enclaves.
The Public Works Department manages the city's infrastructure. They oversee the construction and maintenance of roads and sewers, and oversee fleet management and wastewater treatment. The Omaha Police Department handles crime, parking issues, vehicle licensing issues, and other law enforcement issues. The city has a total of nine departments and boards that serve the people of Omaha. The board members are elected by the people of Omaha, and each member has a four-year term.
In recent years, the city has been experiencing an influx of African immigrants. The city has the largest Sudanese community in the U.S., with ten different tribes represented. The rapid growth of the city has also necessitated the development of urban infrastructure. The city was known as the "Gate City of the West" because of its central role in transportation history. The Union Pacific Railroad started construction in Omaha on the eastern portion of the first transcontinental railroad, and nearly every major railroad in the world served the region.