Helsinki: city in Southern Finland, Finland
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 Helsinki, Finland on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Helsinki as of 2014, the overall level of street-network sprawl is 0.81, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 0.34, 1.03, 1.33 and 1.4. In each period, new street development in Helsinki steadily grows more disconnected than in the last. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.69 points, but between 1991-2000 and 2001-2014, it rose by just 0.07.
Quantity of street network construction: The street network in Helsinki spans a total of 2777 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 1.03, 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 0.34, 0.73, 0.77 and 0.81. Overall, the SNDi of the aggregate street network has risen: the street network in Helsinki has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.39 points, but between 1991-2000 and 2001-2014, it rose by just 0.04.
Helsinki and Southern Finland 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 Helsinki fare in comparison to others in Southern Finland? Most recently in 2001-2014, street construction in Helsinki was the 1st-most disconnected out of the 1 cities in Southern Finland. Its position in the ranks since 1975 has not changed. Helsinki ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.
Helsinki and Finland 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 Helsinki fare in comparison to others in Finland? Most recently in 2001-2014, street construction in Helsinki was the 4th-most disconnected out of the 6 cities in Finland. Its position in the ranks since 1975 has risen; relative to other cities in Finland, street construction in Helsinki has become more disconnected. Helsinki ranked 5th in 1975, 5th in 1976-1990, 5th in 1991-2000 and 4th in 2001-2014.
Helsinki and Southern Finland follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Helsinki is the 1st-most disconnected out of the 1 cities in Southern Finland. Its position in the ranks since 1975 has not changed. Helsinki ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.
Helsinki and Finland follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Helsinki is the 4th-most disconnected out of the 6 cities in Finland. Its position in the ranks since 1975 has risen; relative to other cities in Finland, the street network in Helsinki has become more disconnected. Helsinki ranked 5th in 1975, 3rd in 1976-1990, 3rd in 1991-2000 and 4th in 2001-2014.
As of 2015, Helsinki had a built-up area of 117.05 square kilometers, and a population of 907385 people.
These are some other cities with approximately the same population: