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

How do development practices in Dihok fare in comparison to others in Iraq? Most recently in 2006-2020, street construction in Dihok was the 5th-most disconnected out of the 18 regions in Iraq. Its position in the ranks since 1975 has risen; relative to other regions in Iraq, street construction in Dihok has become more disconnected. Dihok ranked 7th in 1975, 14th in 1976-1990, 11th in 1991-2005 and 5th in 2006-2020.

As of 2020, the city with the most disconnected street network in Dihok is Khanich with an SNDi of 3.0, which is moderately connected. Conversely, the most connected city is Zakho with an SNDi of 2.54, which is relatively well-connected. See trends for these cities: Zakho, Khanich

The level of street-network sprawl in the aggregate network in Dihok peaked in 1991-2005. To get a sense of how the aggregate street network has changed in Dihok, we can consider three of its most populous cities: Duhok, Zakho and Domeez. Out of the three cities, Duhok and Zakho do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Duhok rose steadily. The level of street-network sprawl in the aggregate network in Zakho rose steadily.

To date, Dihok is the 9th-most disconnected out of the 18 regions in Iraq. Its position in the ranks since 1975 has fallen; relative to other regions in Iraq, the street network in Dihok has become more connected. Dihok ranked 7th in 1975, 9th in 1976-1990, 12th in 1991-2005 and 9th in 2006-2020.