San Miguel de Allende in context: Street-network sprawl trends

San Miguel de Allende in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
San Miguel de AllendeGuanajuato (Region)Mexico (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with San Miguel de Allende plotted against Guanajuato and México. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, San Miguel de Allende's incremental SNDi rose from 2.84 to 3.16 between 1991-2005 and 2006-2020. In terms of the aggregate network, San Miguel de Allende ranked 12th out of 15 cities in Guanajuato and 109th out of 182 in México as of 2020.

New Street Additions (2006–2020)

SNDi value
3.16
Rank in México
63rd of 182
Rank in Guanajuato
3rd of 15

Entire Network (Aggregate)

SNDi value
2.9
Rank in México
109th of 182
Rank in Guanajuato
12th of 15

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
San Miguel de AllendeBorcaUmred

While Borca and Umred both built increasingly disconnected streets over time, San Miguel de Allende fluctuated in its street-construction patterns in new street additions. Looking at the full network, Borca and Umred both became progressively more disconnected, while San Miguel de Allende fluctuated in connectivity. San Miguel de Allende and Borca have been growing further apart in their street-network character since 1975.