1 # Installing TIGER housenumber data for the US
3 Nominatim is able to use the official [TIGER](https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html)
4 address set to complement the OSM house number data in the US. You can add
5 TIGER data to your own Nominatim instance by following these steps. The
6 entire US adds about 10GB to your database.
8 1. Get preprocessed TIGER 2021 data:
11 wget https://nominatim.org/data/tiger2021-nominatim-preprocessed.csv.tar.gz
13 2. Import the data into your Nominatim database:
15 nominatim add-data --tiger-data tiger2021-nominatim-preprocessed.csv.tar.gz
17 3. Enable use of the Tiger data in your `.env` by adding:
19 echo NOMINATIM_USE_US_TIGER_DATA=yes >> .env
21 4. Apply the new settings:
23 nominatim refresh --functions
26 See the [TIGER-data project](https://github.com/osm-search/TIGER-data) for more
27 information on how the data got preprocessed.