Urban decay in the context of "Detroit, Michigan, United States"

Urban renewal (sometimes called urban regeneration in the United Kingdom and urban redevelopment in the United States) is a program of land redevelopment often used to address real or perceived urban decay. Urban renewal involves the clearing out of areas deemed blighted, often in inner cities, in favour of new housing, businesses, and other developments.

Suburbanization (American English), also spelled suburbanisation (British English), is a population shift from historic core cities or rural areas into suburbs. Most suburbs are built in a formation of (sub)urban sprawl. As a consequence of the movement of households and businesses away from city centers, low-density, peripheral urban areas grow. Proponents of curbing suburbanization argue that sprawl leads to urban decay and a concentration of lower-income residents in the inner city, in addition to environmental harm.

Suburbanization can be a progressive process, as growing population pushes outward the zones of the concentric zone model that move outward to escape the increasing density of inward areas. For example, Kings County, New York served New York City as farmland in the 18th century, with boats carrying produce across the East River. The steam ferry later made Brooklyn Heights a commuter town for Wall Street. Streetcar suburbs spread through the county, and as elevated railways further extended its reach, the City of Brooklyn grew to fill the county. Areas along the river became industrialized and apartment buildings filled the places where factories did not replace the scattered houses. As a result, much of Brooklyn transformed into a suburban economy and later into an urban economy entirely.

The Death and Life of Great American Cities is a 1961 book by writer and activist Jane Jacobs. The book is a critique of 1950s urban planning policy, which it holds responsible for the decline of many city neighborhoods in the United States. The book is Jacobs' best-known and most influential work.

Jacobs was a critic of "rationalist" planners of the 1950s and 1960s, especially Robert Moses, as well as the earlier work of Le Corbusier. She argued that urban planning should prioritize the needs and experiences of residents, and modernist urban planning overlooked and oversimplified the complexity of human lives in diverse communities. She opposed large-scale urban renewal programs that affected entire neighborhoods and built freeways through inner cities. She instead advocated for dense mixed-use development and walkable streets, with the "eyes on the street" of passers-by helping to maintain public order. She suggested preserving the existing city fabric, including old buildings and established communities.

Delray is a neighborhood in southwest Detroit in the U.S. state of Michigan. Its area extends south to the River Rouge, east to the Detroit River, west to Fort Street, and north to Clark Street. The two census tracts that cover the neighborhood had a population of 2,783 at the 2010 census.

Delray was platted in 1836. Initially a rural area, heavy industry arrived in the 1890s, beginning a prosperous era leading to Delray incorporating as a village in 1897. Delray's population swelled, fueled largely by immigrants from Eastern Europe, and the village's 7 square miles (18 km) were annexed into the city of Detroit in 1906. By 1930, Delray peaked at approximately 24,000 residents, but the population has dropped precipitously since World War II due to increased industrialization, pollution, and urban decay. By the late 1960s, the city's master plan for Delray was to transition it to a purely industrial area. In 2007, the Detroit Metro Times described Delray as "the closest thing to a ghost town within a city."

Knoxville is a city in Knox County, Tennessee, United States, and its county seat. Located on the Tennessee River within the Appalachian Mountains, it is the largest city in the Grand Division of East Tennessee. Knoxville had a population of 190,740 at the 2020 census, making it the third-most populous city in Tennessee. The Knoxville metropolitan area has an estimated 958,000 residents.

Settled in 1786, Knoxville was the first capital of Tennessee. The city struggled with geographic isolation throughout the early 19th century before the arrival of the railroad in 1855 led to an economic boom. The city was bitterly divided over the issue of secession during the American Civil War and was occupied alternately by the Confederate and Union armies, which culminated in the Battle of Fort Sanders in 1863. Following the war, Knoxville grew rapidly and became a major wholesaling and manufacturing center until the 1920s when the city's economy began to stagnate. During the Great Depression, Knoxville's manufacturing sector collapsed, the downtown area declined, and city leaders became entrenched in highly partisan political fights. Hosting the 1982 World's Fair helped reinvigorate the city, and revitalization initiatives by city leaders and private developers have spurred growth in the city, especially downtown.

Newark has long been the largest city in New Jersey. Founded in 1666, it greatly expanded during the Industrial Revolution, becoming the commercial and cultural hub of the region. Its population grew with various waves of migration in the mid-19th century, peaking in 1950. It suffered greatly during the era of urban decline and suburbanization in the late 20th century. Since the millennium it has benefited from interest and re-investment in America's cities, recording population growth in the 2010 and 2020 censuses.