57 lines
1.7 KiB
Markdown
57 lines
1.7 KiB
Markdown
# TIGER Geocoder Data Dumps
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Pre-built PostgreSQL database dumps for the [TIGER/Line Rural Address Geocoder](https://git.supported.systems/mctiger/mctiger).
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## Available Dumps
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| File | State | Vintage | Size | Description |
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| `idaho-tiger-2024.dump` | Idaho (ID) | 2024 | ~297 MB | All 44 counties with edges, featnames, places |
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## Quick Start
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Instead of downloading and importing raw TIGER/Line shapefiles, restore a pre-built dump:
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```bash
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# 1. Download the dump (from releases)
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wget https://git.supported.systems/mctiger/mctiger-data/releases/download/v2024.1/idaho-tiger-2024.dump
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# 2. Restore to your PostGIS database
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pg_restore -h localhost -U postgres -d tiger_geocoder idaho-tiger-2024.dump
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```
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## What's Included
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Each dump contains:
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- **tiger_edges** - Road segments with geometries, names, address ranges
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- **tiger_featnames** - Alternate road names and aliases
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- **tiger_places** - City/town boundaries with pre-computed centroids
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- **Indexes** - GiST spatial indexes and GIN trigram indexes (ready to query)
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## Creating Your Own Dumps
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To create a dump for another state:
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```bash
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# 1. Download TIGER/Line data
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tiger-download --state 06 # California
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# 2. Import into PostGIS
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tiger-import --state 06
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# 3. Create dump
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pg_dump -Fc -h localhost -U postgres tiger_geocoder > california-tiger-2024.dump
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```
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## Versioning
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Dumps follow the pattern: `{state}-tiger-{year}.dump`
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- **Year** matches the TIGER/Line vintage (e.g., 2024)
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- New releases are created when Census Bureau publishes updated data (typically annually)
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## License
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TIGER/Line data is public domain (US Government work). See [Census Bureau Terms](https://www.census.gov/data/developers/about/terms-of-service.html).
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