Urmia: city in West Azarbaijan, Iran
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 Urmia, Iran on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Urmia as of 2014, the overall level of street-network sprawl is 3.29, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 3.8, 2.85, 3.77 and 3.97. The disconnectivity of new streets constructed in Urmia fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Urmia spans a total of 1473 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 2.85, which is in the 40th to 60th percentile of disconnectedness.
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 3.8, 2.99, 3.19 and 3.29. The SNDi of the aggregate street network in fell at first, but Urmia has worsened in disconnectivity since 1990.
Urmia and West Azarbaijan follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these was at its lowest in 1976-1990.
How do development practices in Urmia fare in comparison to others in West Azarbaijan? Most recently in 2001-2014, street construction in Urmia was the 6th-most disconnected out of the 11 cities in West Azarbaijan. Its position in the ranks since 1975 has fallen; relative to other cities in West Azarbaijan, street construction in Urmia has become more connected. Urmia ranked 2nd in 1975, 1st in 1976-1990, 3rd in 1991-2000 and 6th in 2001-2014.
Urmia and Iran follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these was at its lowest in 1976-1990.
How do development practices in Urmia fare in comparison to others in Iran? Most recently in 2001-2014, street construction in Urmia was the 43rd-most disconnected out of the 181 cities in Iran. Its position in the ranks since 1975 has fallen; relative to other cities in Iran, street construction in Urmia has become more connected. Urmia ranked 32nd in 1975, 34th in 1976-1990, 43rd in 1991-2000 and 43rd in 2001-2014.
Urmia and West Azarbaijan follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these was at its lowest in 1976-1990.
To date, Urmia is the 2nd-most disconnected out of the 11 cities in West Azarbaijan. Its position in the ranks since 1975 has not changed. Urmia ranked 2nd in 1975, 1st in 1976-1990, 1st in 1991-2000 and 2nd in 2001-2014.
Urmia and Iran follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these was at its lowest in 1976-1990.
To date, Urmia is the 34th-most disconnected out of the 181 cities in Iran. Its position in the ranks since 1975 has fallen; relative to other cities in Iran, the street network in Urmia has become more connected. Urmia ranked 32nd in 1975, 35th in 1976-1990, 32nd in 1991-2000 and 34th in 2001-2014.
As of 2015, Urmia had a built-up area of 40.99 square kilometers, and a population of 765853 people.
These are some other cities with approximately the same population: