Atlas of Urban Expansion

Population

The Population of Seoul in 2014 was 23,711,624, increasing at an average annual rate of 1.3% since 2000. The population of Seoul in 2000 was 19,696,142, increasing at an average annual rate of 1.6% since 1991, when its population was 17,106,932.

Urban Extent

The Urban Extent of Seoul in 2014 was 314,748 hectares, increasing at an average annual rate of 3.9% since 2000. The urban extent in 2000 was 181,751 hectares, increasing at an average annual rate of 7.3% since 1991, when its urban extent was 95,803 hectares.

• 1991
• 2000
• 2014

•  
• Urban Extent
• Urban Built-up
• Suburban Built-up
• Rural Built-up
• Urbanized Open Space
•  
• Exurban Area
• Exurban Built-Up Area
• Exurban Open Space
•  
• Rural Open Space
• Rural Open Space

Density

Built-up Area Density in Seoul in 2014 was 119 persons per hectare, decreasing at an average annual rate of -2.5% since 2000. The built-up area density in 2000 was 169 persons per hectare, decreasing at an average annual rate of -4.6% since 1991 when the built-up area density was 253.16 persons per hectare.

The Urban Extent Density in Seoul in 2014 was 75 persons per hectare, decreasing at an average annual rate of -2.6% since 2000. The urban extent density in 2000 was 108 persons per hectare, decreasing at an average annual rate of -5.7% since 1991 when the urban extent density was 179 persons per hectare.

Composition of Added Area

A total of 76,396 hectares of built-up area was added to the Seoul urban extent between 2000 and 2014. Of that added built-up area, 28% was Infill, 42% was Extension, 1% was Leapfrog, and 28% was Inclusion. A total of 48,849 hectares of built-up area was added to the urban extent between 1991 and 2000. Of that added built-up area, 18% was Infill, 50% was Extension, 0% was Leapfrog, and 32% was Inclusion.

• 1991–2000
• 2000–2014

• Built-up Area
  1991
• Infill
• Extension
• Leapfrog
• Inclusion

Roads

Average road width in the Seoul 1990-2014 expansion area was 5.6 meters, compared to 7.62 meters in its pre-1990 area.

The share of built-up area in Seoul occupied by roads in the 1990-2014 expansion area was 20%, compared to 22% in the pre-1990 area.

• Pre 1990
• 1990 – 2014

Arterial Roads

The density of arterial roads in Seoul's 1990-2014 expansion was 0.79 km/km2, compared to 2.51 km/km2 in its pre-1990 area.

The share of built-up area within walking distance of an arterial road in Seoul's 1990-2014 expansion area was 71%, compared to 95% in the pre-1990 area.

• 1991
• 2014

Blocks and Plots

Average block size in Seoul's 1990-2014 expansion area was 6.3 hectares, compared to 2.4 hectares in its pre-1990 area.

• Pre 1990
• 1990 – 2014