The level of street-network sprawl in new development in Qazvin peaked in 1991-2005. To get a sense of how street development has changed in Qazvin, we can consider three of its most populous cities: Qazvin, Alvand and Takestan. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Qazvin rose steadily. The level of street-network sprawl in new development in Alvand was at its lowest in 1976-1990. The level of street-network sprawl in new development in Takestan rose steadily.

As of 2020, the city with the most disconnected street network in Qazvin is Qazvin with an SNDi of 3.45, which is relatively sprawly. Conversely, the most connected city is Alvand with an SNDi of 2.44, which is relatively well-connected. See trends for these cities: Alvand, Qazvin

The level of street-network sprawl in the aggregate network in Qazvin rose steadily. To get a sense of how the aggregate street network has changed in Qazvin, we can consider three of its most populous cities: Qazvin, Alvand and Takestan. Out of the three cities, Alvand does not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Alvand was at its lowest in 1976-1990.