{
  "datasetId": "midwest-geography-2026",
  "name": "U.S. Census Midwest Geography",
  "description": "The 12-state U.S. Census Midwest region and its East North Central and West North Central divisions, plus separately typed regional frameworks used by this website.",
  "version": "1.0.0",
  "lastReviewed": "2026-09-26",
  "publisher": "JoshLiljenquist.com",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Compiled from the cited U.S. Census Bureau and OMB geographic sources. Upstream source materials retain their own legal status and attribution requirements.",
  "region": {
    "geoId": "geo-us-midwest",
    "name": "Midwest",
    "type": "census_region",
    "parentIds": [
      "geo-us"
    ],
    "censusRegionCode": "2",
    "sourceIds": [
      "source-census-regions-divisions",
      "source-census-region-map"
    ]
  },
  "divisions": [
    {
      "geoId": "geo-us-midwest-east-north-central",
      "name": "East North Central",
      "type": "census_division",
      "parentIds": [
        "geo-us-midwest"
      ],
      "censusDivisionCode": "3",
      "sourceIds": [
        "source-census-regions-divisions",
        "source-census-region-map"
      ]
    },
    {
      "geoId": "geo-us-midwest-west-north-central",
      "name": "West North Central",
      "type": "census_division",
      "parentIds": [
        "geo-us-midwest"
      ],
      "censusDivisionCode": "4",
      "sourceIds": [
        "source-census-regions-divisions",
        "source-census-region-map"
      ]
    }
  ],
  "states": [
    {
      "geoId": "geo-us-il",
      "name": "Illinois",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-east-north-central"
      ],
      "postalCode": "IL",
      "fips": "17"
    },
    {
      "geoId": "geo-us-in",
      "name": "Indiana",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-east-north-central"
      ],
      "postalCode": "IN",
      "fips": "18"
    },
    {
      "geoId": "geo-us-ia",
      "name": "Iowa",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-west-north-central"
      ],
      "postalCode": "IA",
      "fips": "19"
    },
    {
      "geoId": "geo-us-ks",
      "name": "Kansas",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-west-north-central"
      ],
      "postalCode": "KS",
      "fips": "20"
    },
    {
      "geoId": "geo-us-mi",
      "name": "Michigan",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-east-north-central"
      ],
      "postalCode": "MI",
      "fips": "26"
    },
    {
      "geoId": "geo-us-mn",
      "name": "Minnesota",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-west-north-central"
      ],
      "postalCode": "MN",
      "fips": "27"
    },
    {
      "geoId": "geo-us-mo",
      "name": "Missouri",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-west-north-central"
      ],
      "postalCode": "MO",
      "fips": "29"
    },
    {
      "geoId": "geo-us-ne",
      "name": "Nebraska",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-west-north-central"
      ],
      "postalCode": "NE",
      "fips": "31"
    },
    {
      "geoId": "geo-us-nd",
      "name": "North Dakota",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-west-north-central"
      ],
      "postalCode": "ND",
      "fips": "38"
    },
    {
      "geoId": "geo-us-oh",
      "name": "Ohio",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-east-north-central"
      ],
      "postalCode": "OH",
      "fips": "39"
    },
    {
      "geoId": "geo-us-sd",
      "name": "South Dakota",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-west-north-central"
      ],
      "postalCode": "SD",
      "fips": "46"
    },
    {
      "geoId": "geo-us-wi",
      "name": "Wisconsin",
      "type": "state",
      "parentIds": [
        "geo-us-midwest-east-north-central"
      ],
      "postalCode": "WI",
      "fips": "55"
    }
  ],
  "regionalFrameworks": [
    {
      "geoId": "geo-us-mn-wi-twin-cities-msa-33460",
      "name": "Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area",
      "displayName": "Twin Cities metro",
      "type": "metropolitan_statistical_area",
      "parentIds": [
        "geo-us-mn",
        "geo-us-wi"
      ],
      "cbsaCode": "33460",
      "delineation": "OMB Bulletin No. 23-01 (July 21, 2023)",
      "sourceIds": [
        "source-omb-2023-cbsa"
      ],
      "componentCounties": [
        {
          "name": "Anoka County",
          "state": "MN",
          "fips": "27003"
        },
        {
          "name": "Carver County",
          "state": "MN",
          "fips": "27019"
        },
        {
          "name": "Chisago County",
          "state": "MN",
          "fips": "27025"
        },
        {
          "name": "Dakota County",
          "state": "MN",
          "fips": "27037"
        },
        {
          "name": "Hennepin County",
          "state": "MN",
          "fips": "27053"
        },
        {
          "name": "Isanti County",
          "state": "MN",
          "fips": "27059"
        },
        {
          "name": "Le Sueur County",
          "state": "MN",
          "fips": "27079"
        },
        {
          "name": "Mille Lacs County",
          "state": "MN",
          "fips": "27095"
        },
        {
          "name": "Ramsey County",
          "state": "MN",
          "fips": "27123"
        },
        {
          "name": "Scott County",
          "state": "MN",
          "fips": "27139"
        },
        {
          "name": "Sherburne County",
          "state": "MN",
          "fips": "27141"
        },
        {
          "name": "Washington County",
          "state": "MN",
          "fips": "27163"
        },
        {
          "name": "Wright County",
          "state": "MN",
          "fips": "27171"
        },
        {
          "name": "Pierce County",
          "state": "WI",
          "fips": "55093"
        },
        {
          "name": "St. Croix County",
          "state": "WI",
          "fips": "55109"
        }
      ]
    },
    {
      "geoId": "geo-us-mn-southern-editorial",
      "name": "Southern Minnesota",
      "type": "editorial_region",
      "parentIds": [
        "geo-us-mn"
      ],
      "sourceIds": [
        "source-explore-minnesota-south"
      ],
      "membershipRule": "A record must name a Minnesota community or county that the retained public regional framework presents as Southern Minnesota. The underlying community or county remains the asserted geography; this editorial membership does not replace it or claim a universal boundary."
    }
  ],
  "sources": [
    {
      "sourceId": "source-census-regions-divisions",
      "name": "U.S. Census Bureau — Geographic Levels",
      "url": "https://www.census.gov/programs-surveys/economic-census/guidance-geographies/levels.html",
      "sourceClass": "official government geography",
      "supports": [
        "Midwest region",
        "East North Central division",
        "West North Central division",
        "state memberships"
      ]
    },
    {
      "sourceId": "source-census-region-map",
      "name": "U.S. Census Bureau — Census Regions and Divisions of the United States",
      "url": "https://www2.census.gov/geo/pdfs/maps-data/maps/reference/us_regdiv.pdf",
      "sourceClass": "official government reference map",
      "supports": [
        "region code 2",
        "division codes 3 and 4",
        "state FIPS codes"
      ]
    },
    {
      "sourceId": "source-omb-2023-cbsa",
      "name": "OMB Bulletin No. 23-01",
      "url": "https://www.whitehouse.gov/wp-content/uploads/2023/07/OMB-Bulletin-23-01.pdf",
      "sourceClass": "official federal statistical delineation",
      "supports": [
        "Minneapolis-St. Paul-Bloomington, MN-WI MSA 33460",
        "15 component counties"
      ]
    },
    {
      "sourceId": "source-explore-minnesota-south",
      "name": "Explore Minnesota — Southern Minnesota",
      "url": "https://www.exploreminnesota.com/southern-minnesota",
      "sourceClass": "official state tourism framework",
      "supports": [
        "editorial Southern Minnesota community framework"
      ]
    }
  ]
}