{
  "_meta": {
    "filled": 22,
    "filled_pct": 84,
    "progress_class": "warning",
    "schema": "sdohplace",
    "to_fill": 26
  },
  "access_rights": "Public",
  "alternative_title": [
    "NaNDA Street Connectivity by ZIP Code Tabulation Area, United States, 2010"
  ],
  "bounding_box": null,
  "centroid": null,
  "creator": [
    "University of Michigan. Institute for Social Research"
  ],
  "data_usage_notes": "This dataset contains measures of street connectivity (how well streets connect) within United States ZIP code tabulation areas (ZCTAs). This includes measures of the number of street segments (links) and intersections (nodes) per ZCTA, street length within ZCTAs, and indices representing overall connectivity within the ZCTA.",
  "data_variables": [
    "Alpha index: number of circuits / max number of circuits",
    "Average block length: mean length of streets in ZCTA",
    "Block density",
    "Census 2010 tract FIPS code",
    "Census 2020 tract FIPS code",
    "Census tract area (square miles)",
    "Connected node ratio",
    "Gamma index: number of links fully in ZCTA / max possible links",
    "Intersection density",
    "Length of street segments within ZCTA (meters)",
    "Length of street segments within tract (meters)",
    "Link/node ratio",
    "Median block length: median length of streets in ZCTA",
    "Number of census blocks in ZCTA",
    "Number of census blocks in tract",
    "Number of nodes in ZCTA",
    "Number of nodes in tract",
    "Number of real nodes (nodes at 3- or 4-way intersections",
    "Number of street segments in ZCTA",
    "Number of street segments in census tract",
    "Street network density",
    "ZCTA area (square miles)",
    "ZIP code tabulation area"
  ],
  "date_issued": null,
  "date_range": [],
  "description": [
    "This dataset contains measures of street connectivity (how well streets connect with one another) within all United States ZIP code tabulation areas (ZCTAs). This includes measures of the number of street segments (links) and intersections (nodes) per ZCTA, street length within ZCTA, and indices representing overall connectivity within the ZCTA."
  ],
  "display_note": [],
  "featured_variable": [],
  "file_size": "1.8 MB\t",
  "format": "csv | dta",
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  "georeferenced": false,
  "highlight_ids": [],
  "id": "herop-kgnhrw",
  "identifier": [
    "doi.org/10.3886/ICPSR38580.v2"
  ],
  "index_year": [
    2010
  ],
  "is_part_of": [
    "herop-zrurpe"
  ],
  "is_replaced_by": [],
  "is_version_of": [],
  "keyword": [
    "Connectivity",
    "Urban",
    "Street Data"
  ],
  "language": [
    "eng"
  ],
  "license": [],
  "member_of": [],
  "metadata_version": "SDOH PlaceProject",
  "methods_variables": [
    "links, street lengths, nodes, endpoints of links, buffers, areas over which to calculate street connectivity, circuits,  connected path along streets"
  ],
  "modified": "2025-10-10T19:03:36Z",
  "preferred_citation": "Ailshire, Jennifer, Melendez, Robert, and Chenoweth, Megan. National Neighborhood Data Archive (NaNDA): Street Connectivity by ZIP Code Tabulation Area, United States, 2010. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2021-03-10. https://doi.org/10.3886/E134561V1",
  "provider": "Healthy Regions & Policies Lab, University of Illinois, Urbana-Champaign",
  "publisher": [
    "University of Michigan. Institute for Social Research"
  ],
  "references": {},
  "relation": [],
  "replaces": [],
  "resource_class": [
    "Datasets"
  ],
  "resource_type": [
    "Point data"
  ],
  "rights": [],
  "rights_holder": [],
  "source": [],
  "spatial_coverage": [
    "United States"
  ],
  "spatial_resolution": [
    "Zip Code Tabulation Area (ZCTA)"
  ],
  "spatial_resolution_note": null,
  "subject": [
    "Neighborhood and Built Environment"
  ],
  "suppressed": false,
  "temporal_coverage": [
    "2010"
  ],
  "theme": [
    "Structure",
    "Transportation"
  ],
  "title": "Street Connectivity (NaNDA)",
  "wxs_indentifier": null
}