Zaria: city in Kaduna, 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 Zaria, Nigeria on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Zaria as of 2014, the overall level of street-network sprawl is 1.52, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 0.9, 2.0, 4.24 and 1.84. Street construction in Zaria increased in disconnectivity initially but has since improved. The streets constructed in 1991-2000 were the most disconnected.
Quantity of street network construction: The street network in Zaria spans a total of 1097 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 1.84, which is relatively well-connected.
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 0.9, 1.31, 1.32 and 1.52. Overall, the SNDi of the aggregate street network has risen: the street network in Zaria has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.4 points, but between 1991-2000 and 2001-2014, it rose by just 0.2.
Zaria and Kaduna follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these peaked in 1991-2000.
How do development practices in Zaria fare in comparison to others in Kaduna? Most recently in 2001-2014, street construction in Zaria was the 7th-most disconnected out of the 14 cities in Kaduna. Its position in the ranks since 1975 has fallen; relative to other cities in Kaduna, street construction in Zaria has become more connected. Zaria ranked 6th in 1975, 4th in 1976-1990, 1st in 1991-2000 and 7th in 2001-2014.
Zaria and Nigeria follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these peaked in 1991-2000.
How do development practices in Zaria fare in comparison to others in Nigeria? Most recently in 2001-2014, street construction in Zaria was the 241st-most disconnected out of the 411 cities in Nigeria. Its position in the ranks since 1975 has fallen; relative to other cities in Nigeria, street construction in Zaria has become more connected. Zaria ranked 152nd in 1975, 167th in 1976-1990, 76th in 1991-2000 and 241st in 2001-2014.
Zaria and Kaduna follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Zaria is the 5th-most disconnected out of the 14 cities in Kaduna. Its position in the ranks since 1975 has risen; relative to other cities in Kaduna, the street network in Zaria has become more disconnected. Zaria ranked 6th in 1975, 4th in 1976-1990, 4th in 1991-2000 and 5th in 2001-2014.
Zaria and Nigeria follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Zaria is the 234th-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 Zaria has become more connected. Zaria ranked 152nd in 1975, 199th in 1976-1990, 211th in 1991-2000 and 234th in 2001-2014.
As of 2015, Zaria had a built-up area of 36.01 square kilometers, and a population of 756517 people.
These are some other cities with approximately the same population: