Neanderthal Painting Monet

    DefinitelyTyped icon, indicating that this package has TypeScript declarations provided by the separate @types/node-postal package

    1.1.2 • Public • Published


    Build Status npm

    These are the NodeJS bindings to libpostal, a fast, multilingual NLP library for parsing/normalizing physical addresses. libpostal is written in C because virtually every other language can bind to C.


    var postal = require('node-postal');
    // Expansion API
    postal.expand.expand_address('V XX Settembre, 20');
    // Parser API
    postal.parser.parse_address('Barboncino 781 Franklin Ave, Crown Heights, Brooklyn, NY 11238');


    Before using the Node bindings, you must install the libpostal C library. Make sure you have the following prerequisites:

    On Ubuntu/Debian

    sudo apt-get install curl autoconf automake libtool pkg-config

    On CentOS/RHEL

    sudo yum install curl autoconf automake libtool pkgconfig

    On Mac OSX

    brew install curl autoconf automake libtool pkg-config

    Installing libpostal

    git clone
    cd libpostal
    ./configure --datadir=[...some dir with a few GB of space...]
    sudo make install
    # On Linux it's probably a good idea to run
    sudo ldconfig

    Install node-gyp

    Then install node-gyp system-wide:

    sudo npm install -g node-gyp

    Installing node-gyp on Linux (Ubuntu)

    First make sure you have:

    1. gcc, g++ and make (sudo apt-get install build-essential on Ubuntu)
    2. NodeJS with all the development headers (if using a package manager like apt-get, follow the instructions here:
    3. python 2.7

    Installing the Node bindings

    npm install node-postal


    node-postal is tested on most major versions of Node (0.10+) in continuous integration. The C++ bindings are written using Nan, which abstracts the API changes across various versions of V8, so the latest versions of Node will likely work.

    If you're having trouble compiling, post a Github issue with your OS and Node versions along with the output of npm install / node-gyp rebuild.


    To run the unit tests:

    npm test


    Installing libpostal: node-postal is a thin wrapper around libpostal, which is written in C. Installing node-postal with npm will not install libpostal as a dependency. The install steps described above will install it in standard locations for your OS. For OS X and Linux, that's /usr/local/include and /usr/local/lib. node-postal will look in these locations for the C libraries. If you have problems installing node-postal, check there for recently installed libpostal libraries.

    Downloading Large Files The make process downloads ~750MB of data, ~2GB unzipped (note: these are production-quality machine learning models trained on over a billion addresses, that's how much disk/memory it takes). Make sure the --datadir argument to configure, which requires an absolute path, has enough room to accommodate the models. If you get errors after downloading, e.g.:

    make[3]: *** [all-local] Error 1
    make[2]: *** [all-recursive] Error 1
    make[1]: *** [all-recursive] Error 1
    make: *** [all] Error 2

    there may be problems with subsequent install steps. Occasionally something will go wrong and it will give up downloading. Once downloading is complete, the make script will unpack the langauge_classifier.tar.gz.X files. If you see these files, your download may have stopped. Try running the make script again.

    Special Thanks

    Lucas Hrabovsky ( for information and examples of repos using Nan, node-gyp, etc.


    npm i node-postal

    DownloadsWeekly Downloads






    Unpacked Size

    23 kB

    Total Files


    Last publish


    • missinglink