The level of street-network sprawl in new development in Niigata followed a zig-zag trend with an overall decrease. To get a sense of how street development has changed in Niigata, we can consider three of its most populous cities: Niigata, Nagaoka and Sanjo. Out of the three cities, Niigata and Nagaoka do not follow the same trend as the region. The level of street-network sprawl in new development in Niigata peaked in 1976-1990. The level of street-network sprawl in new development in Nagaoka peaked in 1976-1990.

As of 2020, the city with the most disconnected street network in Niigata is Niigata with an SNDi of 2.4, which is well-connected. Conversely, the most connected city is Sanjo with an SNDi of 1.69, which is very well-connected. See trends for these cities: Sanjo, Niigata

The level of street-network sprawl in the aggregate network in Niigata peaked in 1976-1990. To get a sense of how the aggregate street network has changed in Niigata, we can consider three of its most populous cities: Niigata, Nagaoka and Sanjo. Out of the three cities, Nagaoka and Sanjo do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Nagaoka rose steadily. The level of street-network sprawl in the aggregate network in Sanjo rose steadily.