Atlas of Urban Expansion

Yamaguchi
Japan
Region: Europe and Japan
2014 Population
244,194
2014 Urban Extent
20,007
hectares
2014 Density
12
persons/hectare
Areas and Densities
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Population

The Population of Yamaguchi in 2014 was 244,194, increasing at an average annual rate of 0.1% since 1999. The population of Yamaguchi in 1999 was 241,088, increasing at an average annual rate of 8.7% since 1990, when its population was 115,170.

Urban Extent

The Urban Extent of Yamaguchi in 2014 was 20,007 hectares, increasing at an average annual rate of 0.3% since 1999. The urban extent in 1999 was 19,056 hectares, increasing at an average annual rate of 8% since 1999, when its urban extent was 9,644 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 Yamaguchi in 2014 was 21 persons per hectare, decreasing at an average annual rate of -0.5% since 1999. The built-up area density in 1999 was 22 persons per hectare, increasing at an average annual rate of 0.1% since 1990 when the built-up area density was 22.09 persons per hectare.

The Urban Extent Density in Yamaguchi in 2014 was 12 persons per hectare, decreasing at an average annual rate of -0.2% since 1999. The urban extent density in 1999 was 13 persons per hectare, increasing at an average annual rate of 0.7% since 1990 when the urban extent density was 12 persons per hectare.

Composition of Added Area

A total of 974 hectares of built-up area was added to the Yamaguchi urban extent between 1999 and 2014. Of that added built-up area, 64% was Infill, 13% was Extension, 1% was Leapfrog, and 23% was Inclusion. A total of 2,174 hectares of built-up area was added to the urban extent between 1990 and 1999. Of that added built-up area, 48% was Infill, 26% was Extension, 0% was Leapfrog, and 26% was Inclusion.

Blocks and Roads
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Roads

Average road width in the Yamaguchi 1990-2014 expansion area was 9.18 meters, compared to 7.13 meters in its pre-1990 area.

The share of built-up area in Yamaguchi occupied by roads in the 1990-2014 expansion area was 24%, compared to 17% in the pre-1990 area.

Arterial Roads

The density of arterial roads in Yamaguchi's 1990-2014 expansion was 1.52 km/km2, compared to 1.65 km/km2 in its pre-1990 area.

The share of built-up area within walking distance of an arterial road in Yamaguchi's 1990-2014 expansion area was 92%, compared to 90% in the pre-1990 area.

1990-1999  1999-2014
1990-1999  1999-2014
1990-1999  1999-2014

Blocks and Plots

Average block size in Yamaguchi's 1990-2014 expansion area was 2.43 hectares, compared to 7.42 hectares in its pre-1990 area.

1990-1999  1999-2014