Abuja: city in Niger, 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 Abuja, Nigeria on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Abuja as of 2014, the overall level of street-network sprawl is 4.48, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.55, 3.44, 4.38 and 4.82. In each period, new street development in Abuja steadily grows more disconnected than in the last. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.89 points, but between 1991-2000 and 2001-2014, it rose by just 0.45.
Quantity of street network construction: The street network in Abuja spans a total of 440 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 4.82, 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 1.55, 3.39, 3.96 and 4.48. Overall, the SNDi of the aggregate street network has risen: the street network in Abuja has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.84 points, but between 1991-2000 and 2001-2014, it rose by just 0.52.
Abuja and Niger 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 Abuja fare in comparison to others in Niger? Most recently in 2001-2014, street construction in Abuja was the 1st-most disconnected out of the 13 cities in Niger. Its position in the ranks since 1975 has risen; relative to other cities in Niger, street construction in Abuja has become more disconnected. Abuja ranked 3rd in 1975, 2nd in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.
Abuja and Nigeria do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Abuja rose steadily, while the SNDi of street constructions in Nigeria peaked in 1991-2000.
How do development practices in Abuja fare in comparison to others in Nigeria? Most recently in 2001-2014, street construction in Abuja was the 88th-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 Abuja has become more disconnected. Abuja ranked 110th in 1975, 80th in 1976-1990, 74th in 1991-2000 and 88th in 2001-2014.
Abuja and Niger follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Abuja is the 1st-most disconnected out of the 13 cities in Niger. Its position in the ranks since 1975 has risen; relative to other cities in Niger, the street network in Abuja has become more disconnected. Abuja ranked 3rd in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.
Abuja and Nigeria follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Abuja is the 41st-most disconnected out of the 411 cities in Nigeria. Its position in the ranks since 1975 has risen; relative to other cities in Nigeria, the street network in Abuja has become more disconnected. Abuja ranked 110th in 1975, 55th in 1976-1990, 43rd in 1991-2000 and 41st in 2001-2014.
As of 2015, Abuja had a built-up area of 18.26 square kilometers, and a population of 329536 people.
These are some other cities with approximately the same population: