Convert TIGER/Line dataset of the US Census Bureau to SQL files which can be imported by Nominatim. In Nominatim the created tables are separate from OpenStreetMap tables and get queried at search time separately.
The dataset gets updated once per year. Downloading is prone to be slow (can take a full day) and converting them can take hours as well. There's a mirror on https://downloads.opencagedata.com/public/
Replace '2020' with the current year throughout.
-
Install the GDAL library and python bindings and the unzip tool
sudo apt-get install python3-gdal unzip pip3 install ogr
-
Get the TIGER 2020 data. You will need the EDGES files (3,234 zip files, 11GB total).
wget -r ftp://ftp2.census.gov/geo/tiger/TIGER2020/EDGES/ -
Convert the data into SQL statements. Adjust the file paths in the scripts as needed
./convert.sh
-
Maybe: package the created files
tar -czf tiger2020-nominatim-preprocessed.tar.gz tiger
The source code is available under a GPLv2 license.