{
  "metadata": {
    "analyzed": "2026-08-31",
    "population_period": [
      "2015-10-01",
      "2020-10-01"
    ],
    "housing_date": "2023-10-01",
    "geography": "Nagano Prefecture: all 19 cities only",
    "census_2015_rebased_to": "2020-10-01 municipal boundaries (table 1-1 note 1)",
    "households": "Total census households, including institutional households; not general households and not dwellings.",
    "design": "Unweighted city-level descriptive cross-year comparison. All four correlation pairings pre-specified. No causal or predictive claim.",
    "city_selection": "All municipality codes beginning 202 in both sources; code 20216 is not a city in this period; prefecture/town/village/old-boundary rows excluded.",
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  },
  "data": [
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      "dwellings_2023": 186130,
      "vacant_total_2023": 28700,
      "vacant_excluding_rental_sale_second_2023": 15010,
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      "vacancy_second_rate_pct": 1.08526298823403,
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      "category_residual_dwellings": -10,
      "population_direction": "decrease",
      "household_direction": "increase",
      "housing_source_cells": "D001!H589;J589;L589;M589;S589:W589",
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      "census_source_cells": "b01_01!A1742;F1742:H1742;K1742:M1742;Q1742:V1742",
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