Double Japan's Population

Devvy

Donor
This is a good reference map for this topic I think.

Nice map. Much of the lower density areas are mountain areas though, so difficult to build on (apart from the chronic earthquake risk!). Difficult terrain + earthquake risk = expensive. There's a reason you already have multiple generations of a family living in one house; the Japanese housing market is already too expensive and apartment sizes are already tiny. If people can't afford a house now, saying you're going to build more of the expensive homes if not going to provide actual accommodation for people.

Just to be clear; you could definitely have some extra population. You could probably squeeze in some decent extra population on Hokkaido, and each city could be a little bigger, but I just can't see there being anywhere near enough space for a doubling of the population. High end plausibility-stretching estimate; maybe 150 million instead of the OTL 125 million'ish.
 
The last time Japan got a natural growth over 1% was in 1976. Assuming this growth didn't go down we could end in with a population of 166.000.000. I think Japan could get this population and have similar wealth level than OTL.
 
Population Growth in Comparison to Original

The Poarter

Banned
upload_2017-5-3_12-31-58.png


Year Original Revised
1945 71,998,000.00 71,998,000.00
1950 84,115,000.00 88,577,613.00
1955 90,077,000.00 99,978,647.00
1960 94,302,000.00 110,346,915.00
1965 99,209,000.00 122,381,003.00
1970 104,665,000.00 136,105,366.00
1975 111,940,000.00 153,429,093.00
1980 117,060,000.00 169,153,883.00
1985 121,049,000.00 184,432,290.00
1990 123,611,000.00 198,606,173.00
1995 125,570,000.00 212,767,528.00
2000 126,962,000.00 226,881,263.00
2005 127,768,000.00 240,809,708.00
2010 128,058,000.00 254,568,299.00
 

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