pgeocode
Postal code geocoding and distance calculations
pgeocode is a Python library for high performance off-line querying of GPS coordinates, region name and municipality name from postal codes. Distances between postal codes as well as general distance queries are also supported. The used GeoNames database includes postal codes for 83 countries.
Currently, only queries within the same country are supported.
For additional documentation see pgeocode.readthedocs.io.
Installation
pgeocode requires Python 3.10+ as well as numpy and pandas packages.
It can be installed with,
pip install pgeocodeQuickstart
Postal code queries
>>> import pgeocode
>>> nomi = pgeocode.Nominatim('fr')
>>> nomi.query_postal_code("75013")
postal_code 75013
country_code FR
place_name Paris 13
state_name Île-de-France
state_code 11
county_name Paris
county_code 75
community_name Paris
community_code 751
latitude 48.8322
longitude 2.3561
accuracy 5
>>> nomi.query_postal_code(["75013", "69006"])
postal_code place_name state_name latitude longitude
0 75013 Paris 13 Île-de-France 48.8322 2.3561
1 69006 Lyon 06 Auvergne-Rhône-Alpes 45.7679 4.8506Place name queries
>>> import pgeocode
>>> nomi = pgeocode.Nominatim('fr')
>>> nomi.query_location("Antibes", top_k=3)
country_code postal_code place_name state_name state_code ... community_name community_code latitude longitude accuracy
49553 FR 06160 Antibes Provence-Alpes-Côte d'Azur 93.0 ... Grasse 061 43.5858 7.1083 5
49787 FR 06600 Antibes Provence-Alpes-Côte d'Azur 93.0 ... Grasse 061 43.5858 7.1083 5
49788 FR 06601 CEDEX Antibes Provence-Alpes-Côte d'Azur 93.0 ... Grasse 061 43.5858 7.1083 5
>>> nomi.query_location("Straassborg", top_k=3, fuzzy_threshold=80)
country_code postal_code place_name state_name state_code ... community_name community_code latitude longitude accuracy
25461 FR 67000 Strasbourg Grand Est 44.0 ... Strasbourg 678 48.5839 7.7455 5
25462 FR 67001 CEDEX Strasbourg Grand Est 44.0 ... Strasbourg 678 48.5839 7.7455 5
25463 FR 67002 CEDEX Strasbourg Grand Est 44.0 ... Strasbourg 678 48.5839 7.7455 5Distance calculations
>>> dist = pgeocode.GeoDistance('fr')
>>> dist.query_postal_code("75013", "69006")
389.156
>>> dist.query_postal_code(["75013", "75014", "75015"], ["69006", "69005", "69004"])
array([ 389.15648697, 390.12577967, 390.49857655])Geocoding format
The result of a geo-localistion query is a pandas.DataFrame with the
following columns,
country_code: iso country code, 2 characterspostal_code: postal codeplace_name: place name (e.g. town, city etc)state_name: 1. order subdivision (state)state_code: 1. order subdivision (state)county_name: 2. order subdivision (county/province)county_code: 2. order subdivision (county/province)community_name: 3. order subdivision (community)community_code: 3. order subdivision (community)latitude: estimated latitude (wgs84)longitude: estimated longitude (wgs84)accuracy: accuracy of lat/lng from 1=estimated to 6=centroid
Configuration and defaults
Storage directory
Defaults to ~/.cache/pgeocode, it is the directory where data is
downloaded for later consumption. It can be changed using the
environment variable PGEOCODE_DATA_DIR, i.e.
export PGEOCODE_DATA_DIR=/tmp/pgeocode_data.
Data sources
Data sources are provided as a list in the pgeocode.DOWNLOAD_URL
variable. The default value is,
DOWNLOAD_URL = [
"https://download.geonames.org/export/zip/{country}.zip",
"https://symerio.github.io/postal-codes-data/data/geonames/{country}.txt",
]Data sources are tried from first to last until one works. Here the second link is a mirror of the first.
It is also possible to extend this variable with third party data sources, as long as they follow the same format. See for instance postal-codes-data repository for examples of data files.
License
The pgeocode package is distributed under the 3-clause BSD license.
The pgeocode package is maintained by Symerio.
Supported countries
The list of countries available in the GeoNames database, with the corresponding country codes, are given below,
Andorra (AD), Argentina (AR), American Samoa (AS), Austria (AT), Australia (AU), Åland Islands (AX), Azerbaijan (AZ), Bangladesh (BD), Belgium (BE), Bulgaria (BG), Bermuda (BM), Brazil (BR), Belarus (BY), Canada (CA), Switzerland (CH), Chile (CL), Colombia (CO), Costa Rica (CR), Cyprus (CY), Czechia (CZ), Germany (DE), Denmark (DK), Dominican Republic (DO), Algeria (DZ), Estonia (EE), Spain (ES), Finland (FI), Federated States of Micronesia (FM), Faroe Islands (FO), France (FR), United Kingdom of Great Britain and Northern Ireland (GB), French Guiana (GF), Guernsey (GG), Greenland (GL), Guadeloupe (GP), Guatemala (GT), Guam (GU), Croatia (HR), Haiti (HT), Hungary (HU), Ireland (IE), Isle of Man (IM), India (IN), Iceland (IS), Italy (IT), Jersey (JE), Japan (JP), Republic of Korea (KR), Liechtenstein (LI), Sri Lanka (LK), Lithuania (LT), Luxembourg (LU), Latvia (LV), Monaco (MC), Republic of Moldova (MD), Marshall Islands (MH), The former Yugoslav Republic of Macedonia (MK), Northern Mariana Islands (MP), Martinique (MQ), Malta (MT), Malawi (MW), Mexico (MX), Malaysia (MY), New Caledonia (NC), Netherlands (NL), Norway (NO), New Zealand (NZ), Peru (PE), Philippines (PH), Pakistan (PK), Poland (PL), Saint Pierre and Miquelon (PM), Puerto Rico (PR), Portugal (PT), Palau (PW), Réunion (RE), Romania (RO), Serbia (RS), Russian Federation (RU), Sweden (SE), Singapore (SG), Slovenia (SI), Svalbard and Jan Mayen Islands (SJ), Slovakia (SK), San Marino (SM), Thailand (TH), Turkey (TR), Ukraine (UA), United States of America (US), Uruguay (UY), Holy See (VA), United States Virgin Islands (VI), Wallis and Futuna Islands (WF), Mayotte (YT), South Africa (ZA)
See GeoNames database for more information.