The level of street-network sprawl in new development in Mahajanga rose steadily. To get a sense of how street development has changed in Mahajanga, we can consider three of its most populous cities: Mahajanga, Amparihimahitsy and Ankazomborona. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Mahajanga followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Amparihimahitsy was at its lowest in 1991-2005. The level of street-network sprawl in new development in Ankazomborona followed a zig-zag trend with an overall decrease.

As of 2020, the city with the most disconnected street network in Mahajanga is Ankazomborona with an SNDi of 6.15, which is very sprawly. Conversely, the most connected city is Mahajanga with an SNDi of 1.94, which is very well-connected. See trends for these cities: Mahajanga, Ankazomborona

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