The level of street-network sprawl in new development in Delaware peaked in 1991-2005. To get a sense of how street development has changed in Delaware, we can consider two of its most populous cities: Wilmington and New Castle. Out of the two cities, New Castle does not follow the same trend as the region. The level of street-network sprawl in new development in New Castle peaked in 1976-1990.

How do development practices in Delaware fare in comparison to others in United States? Most recently in 2006-2020, street construction in Delaware was the 32nd-most disconnected out of the 44 regions in United States. Its position in the ranks since 1975 has risen; relative to other regions in United States, street construction in Delaware has become more disconnected. Delaware ranked 33rd in 1975, 34th in 1976-1990, 37th in 1991-2005 and 32nd in 2006-2020.

As of 2020, the city with the most disconnected street network in Delaware is New Castle with an SNDi of 6.34, which is very sprawly. Conversely, the most connected city is Wilmington with an SNDi of 2.19, which is well-connected. See trends for these cities: Wilmington, New Castle

The level of street-network sprawl in the aggregate network in Delaware rose steadily. To get a sense of how the aggregate street network has changed in Delaware, we can consider two of its most populous cities: Wilmington and New Castle. Disconnectivity in the most populous cities in Delaware follow the same region trend.

To date, Delaware is the 37th-most disconnected out of the 44 regions in United States. Its position in the ranks since 1975 has fallen; relative to other regions in United States, the street network in Delaware has become more connected. Delaware ranked 33rd in 1975, 35th in 1976-1990, 37th in 1991-2005 and 37th in 2006-2020.