Vigan: city in Ilocos Sur, Philippines
What exactly constitutes the spatial extent of the city? For these aggregations, we used the Global Human Settlement Layer Urban Center Database (GHS-UCDB) to define the boundaries of the city. These cities -- or urban centers -- cover areas that are densely populated and built-up, and so may extend beyond the spatial borders of these cities that we may be familiar with. The GHS area is shaded in blue.
View Vigan, Philippines on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Vigan as of 2014, the overall level of street-network sprawl is 2.77, which is in the 40th to 60th percentile of disconnectedness.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.97, 3.34, 1.29 and 6.14. Disconnectivity in street construction in Vigan follows a zig-zag trend. In 1991-2000, street construction was most disconnected, while construction was most connected in 2001-2014.
Quantity of street network construction: The street network in Vigan spans a total of 148 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 3.34, which is highly disconnected.
Effect on the aggregate network: New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 1.97, 2.73, 2.72 and 2.77. Disconnectivity in Vigan's street network follows a zig-zag trend. In 1975, the city was most disconnected; while it was most connected in 2001-2014.
Vigan and Ilocos Sur do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Vigan followed a zig-zag trend with an overall increase, while the SNDi of street constructions in Ilocos Sur rose steadily.
How do development practices in Vigan fare in comparison to others in Ilocos Sur? Most recently in 2001-2014, street construction in Vigan was the 1st-most disconnected out of the 1 cities in Ilocos Sur. Its position in the ranks since 1975 has not changed. Vigan ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.
Vigan and Philippines do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Vigan followed a zig-zag trend with an overall increase, while the SNDi of street constructions in Philippines rose steadily.
How do development practices in Vigan fare in comparison to others in Philippines? Most recently in 2001-2014, street construction in Vigan was the 22nd-most disconnected out of the 89 cities in Philippines. Its position in the ranks since 1975 has risen; relative to other cities in Philippines, street construction in Vigan has become more disconnected. Vigan ranked 64th in 1975, 64th in 1976-1990, 79th in 1991-2000 and 22nd in 2001-2014.
Vigan and Ilocos Sur do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Vigan followed a zig-zag trend with an overall increase, while the SNDi of street constructions in Ilocos Sur rose steadily.
To date, Vigan is the 1st-most disconnected out of the 1 cities in Ilocos Sur. Its position in the ranks since 1975 has not changed. Vigan ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.
Vigan and Philippines do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Vigan followed a zig-zag trend with an overall increase, while the SNDi of street constructions in Philippines rose steadily.
To date, Vigan is the 78th-most disconnected out of the 89 cities in Philippines. Its position in the ranks since 1975 has fallen; relative to other cities in Philippines, the street network in Vigan has become more connected. Vigan ranked 64th in 1975, 72nd in 1976-1990, 76th in 1991-2000 and 78th in 2001-2014.
As of 2015, Vigan had a built-up area of 2.48 square kilometers, and a population of 83798 people.
These are some other cities with approximately the same population: