The level of street-network sprawl in new development in Idaho peaked in 1991-2005. To get a sense of how street development has changed in Idaho, we can consider two of its most populous cities: Boise and Nampa. Disconnectivity in the most populous cities in Idaho follow the same region trend.

As of 2020, the city with the most disconnected street network in Idaho is Nampa with an SNDi of 3.58, which is relatively sprawly. Conversely, the most connected city is Boise with an SNDi of 3.51, which is relatively sprawly. See trends for these cities: Boise, Nampa

The level of street-network sprawl in the aggregate network in Idaho rose steadily. To get a sense of how the aggregate street network has changed in Idaho, we can consider two of its most populous cities: Boise and Nampa. Out of the two cities, Boise does not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Boise peaked in 1991-2005.