Aba: city in Abia, Nigeria
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 Aba, Nigeria on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Aba as of 2014, the overall level of street-network sprawl is 3.48, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 2.05, 3.39, 3.75 and 5.25. In each period, new street development in Aba steadily grows more disconnected than in the last.
Quantity of street network construction: The street network in Aba spans a total of 1338 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 3.39, 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 2.05, 3.22, 3.23 and 3.48. Overall, the SNDi of the aggregate street network has risen: the street network in Aba has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.17 points, but between 1991-2000 and 2001-2014, it rose by just 0.25.
Aba and Abia follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these rose steadily.
How do development practices in Aba fare in comparison to others in Abia? Most recently in 2001-2014, street construction in Aba was the 5th-most disconnected out of the 13 cities in Abia. Its position in the ranks since 1975 has fallen; relative to other cities in Abia, street construction in Aba has become more connected. Aba ranked 2nd in 1975, 7th in 1976-1990, 4th in 1991-2000 and 5th in 2001-2014.
Aba and Nigeria do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Aba rose steadily, while the SNDi of street constructions in Nigeria peaked in 1991-2000.
How do development practices in Aba fare in comparison to others in Nigeria? Most recently in 2001-2014, street construction in Aba was the 73rd-most disconnected out of the 411 cities in Nigeria. Its position in the ranks since 1975 has risen; relative to other cities in Nigeria, street construction in Aba has become more disconnected. Aba ranked 86th in 1975, 85th in 1976-1990, 100th in 1991-2000 and 73rd in 2001-2014.
Aba and Abia follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Aba is the 7th-most disconnected out of the 13 cities in Abia. Its position in the ranks since 1975 has fallen; relative to other cities in Abia, the street network in Aba has become more connected. Aba ranked 2nd in 1975, 7th in 1976-1990, 7th in 1991-2000 and 7th in 2001-2014.
Aba and Nigeria follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Aba is the 95th-most disconnected out of the 411 cities in Nigeria. Its position in the ranks since 1975 has fallen; relative to other cities in Nigeria, the street network in Aba has become more connected. Aba ranked 86th in 1975, 69th in 1976-1990, 80th in 1991-2000 and 95th in 2001-2014.
As of 2015, Aba had a built-up area of 35.51 square kilometers, and a population of 1195860 people.
These are some other cities with approximately the same population: