{
  "schemaVersion": "2.0.0",
  "proposalId": "one-boise",
  "publicationDate": "2026-07-21",
  "lastUpdated": "2026-07-21",
  "status": "evidentiary-redistricting-baseline",
  "units": {
    "population": "persons",
    "share": "percent",
    "households": "households"
  },
  "redistrictingBaseline": {
    "referenceDate": "2026-07-21",
    "censusVintage": "2020 Census PL 94-171 block population",
    "boundaryVintage": "current municipal boundaries returned 2026-07-21",
    "precinctVintage": "current Ada County election precincts returned 2026-07-21",
    "method": "Assign each populated 2020 Census block to the current Boise or Garden City polygon and to the current Ada County precinct containing the block internal point.",
    "places": {
      "boise": {
        "name": "Boise population inside the current Boise boundary",
        "population": 236556,
        "valueType": "derived-from-official-geospatial-records",
        "sourceRefs": ["census-2020-block-service", "ada-current-city-boundaries"]
      },
      "gardenCity": {
        "name": "Garden City population inside the current Garden City boundary",
        "population": 12316,
        "valueType": "derived-from-official-geospatial-records",
        "sourceRefs": ["census-2020-block-service", "ada-current-city-boundaries"]
      },
      "combined": {
        "name": "One Boise redistricting population",
        "population": 248872,
        "valueType": "derived",
        "formula": "236556 + 12316",
        "sourceRefs": ["census-2020-block-service", "ada-current-city-boundaries"]
      }
    },
    "derived": {
      "gardenCityShareOfCombined": {
        "value": 4.949,
        "unroundedValue": 4.949130470685336,
        "formula": "12316 / 248872 * 100"
      },
      "sevenDistrictIdeal": {
        "value": 35553,
        "unroundedValue": 35553.142857142855,
        "formula": "248872 / 7"
      }
    }
  },
  "currentPopulationContext": {
    "referenceDate": "2025-07-01",
    "measure": "Census Bureau V2025 population estimates",
    "boise": 238429,
    "gardenCity": 13047,
    "combined": 251476,
    "formula": "238429 + 13047",
    "use": "Current scale and service planning; not the compact's district population base.",
    "sourceRefs": ["census-quickfacts-boise-2025", "census-quickfacts-garden-city-2025"]
  },
  "householdBaseline": {
    "vintage": "2020-2024 American Community Survey five-year estimates",
    "boiseHouseholds": 101178,
    "gardenCityHouseholds": 5630,
    "combinedHouseholds": 106808,
    "formula": "101178 + 5630",
    "use": "Denominator for clearly labeled per-household equivalents; no tax bill is inferred from it.",
    "sourceRefs": ["census-quickfacts-boise-2025", "census-quickfacts-garden-city-2025"]
  },
  "districtTarget": {
    "councilSeats": 7,
    "targetPopulation": 35553,
    "unroundedTarget": 35553.142857142855,
    "formula": "248872 / 7",
    "gardenCityPopulation": 12316,
    "namedDistrictPopulation": 36248,
    "additionalPopulationInNamedDistrict": 23932,
    "additionalPopulationFormula": "36248 - 12316",
    "gardenCityShareOfNamedDistrictPercent": 33.97704700949018,
    "mapStatus": "attached-to-compact",
    "sourceRefs": ["census-2020-block-service", "ada-current-precincts", "ada-current-city-boundaries"]
  },
  "sourceRefs": [
    "census-2020-block-service",
    "ada-current-city-boundaries",
    "ada-current-precincts",
    "census-quickfacts-boise-2025",
    "census-quickfacts-garden-city-2025",
    "idaho-code-50-707a"
  ]
}