Atlas of Urban Expansion

Seoul
Korea, Rep.
Region: East Asia and the Pacific
2014 Population
23,711,624
2014 Urban Extent
314,748
hectares
2014 Density
75
persons/hectare
Areas and Densities
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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 2000, when its urban extent was 95,803 hectares.

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  • Urban Extent
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  • Exurban Area
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  • 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.

Blocks and Roads
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Roads

Average road width in the Seoul 1990-2014 expansion area was 7.21 meters, compared to 10.71 meters in its pre-1990 area.

The share of built-up area in Seoul occupied by roads in the 1990-2014 expansion area was 22%, compared to 17% in the pre-1990 area.

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.

1991-2000  2000-2014
1991-2000  2000-2014
1991-2000  2000-2014

Blocks and Plots

Average block size in Seoul's 1990-2014 expansion area was 10.38 hectares, compared to 6.75 hectares in its pre-1990 area.

1991-2000  2000-2014