Atlas of Urban Expansion

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 1990, when its urban extent was 9,644 hectares.

• 1990
• 1999
• 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 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.

• 1990–1999
• 1999–2014

• Built-up Area
  1990
• Infill
• Extension
• Leapfrog
• Inclusion

Roads

Average road width in the Yamaguchi 1990-2014 expansion area was 5.79 meters, compared to 5.54 meters in its pre-1990 area.

The share of built-up area in Yamaguchi occupied by roads in the 1990-2014 expansion area was 29%, compared to 27% in the pre-1990 area.

• Pre 1990
• 1990 – 2014

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
• 2014

Blocks and Plots

Average block size in Yamaguchi's 1990-2014 expansion area was 2.4 hectares, compared to 2.8 hectares in its pre-1990 area.

• Pre 1990
• 1990 – 2014