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Postal Codes Solution
Every worldwide postal-code dataset in one bundle — the ultimate global reference for precise postal codes.
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Access dataset files directly from scripts, code, or AI agents.
Each file has a stable URL (r-link) that you can use directly in scripts, apps, or AI agents. These URLs are permanent and safe to hardcode.
Start with these files — they give you everything you need to understand and access the dataset.
- 1. Fetch datapackage.yaml to inspect schema and resources
- 2. Download data resources listed in datapackage.yaml
- 3. Read README.md for full context
Data Files
postal-codes-cz-sample
| Field | Type | Description | Constraints | Title |
|---|---|---|---|---|
| country_code | string | ISO 3166-1 alpha-2 -- always CZ | Country Code | |
| postal_code | string | Czech postal code (PSC, 5 digits with a space, NNN NN) | { "pattern": "^\\d{3} \\d{2}$" } | Postal Code |
| place_name | string | Locality/place name | Place Name | |
| admin_name1 | string | Kraj (region) -- 14/14 covered | Administrative Name 1 | |
| admin_code1 | string | ISO 3166-2:CZ code | Administrative Code 1 | |
| admin_name2 | string | Okres (district) -- 77 distinct values (76 real okresy plus Prague, a district-equivalent statutory city) | Administrative Name 2 | |
| admin_code2 | string | GeoNames' own internal district code -- not an official ISO code | Administrative Code 2 | |
| admin_name3 | string | Not populated -- no third admin tier in this source | Administrative Name 3 | |
| admin_code3 | string | Not populated | Administrative Code 3 | |
| latitude | number | GeoNames latitude (WGS84) | Latitude | |
| longitude | number | GeoNames longitude (WGS84) | Longitude | |
| accuracy | string | GeoNames accuracy of latitude/longitude. GeoNames documents 1=estimated, 4=geonameid, 6=centroid of addresses or shape; other values (e.g. 3) occur upstream without documentation. Empty where GeoNames gives none. | Accuracy | |
| alternative_city_name | string | Not populated in this release | Alternative City Name |
Download
Download sample CSVAbout
- Last updated
- 6 October 2026
- Total rows
- 100
- Format
- CSV
- File size
- 9.97 kB
About this dataset
Postal Codes Dataset for Czechia (CZ)
This dataset lists Czech postal codes with place names, kraje (all of them), okresy (all districts plus Prague as a district-equivalent statutory city) and WGS84 coordinates.
Column definitions, row count, size and last-updated date are in datapackage.yaml.
Data Sources
- Postal codes, place names, administrative divisions and coordinates: © GeoNames, postal code export for Czechia, CC BY 4.0.
Changes made to the source data: region codes (admin_code1) written as ISO 3166-2:CZ codes by name crosswalk, and the literal string "nan" in source fields left empty.
Not endorsed by, or affiliated with, GeoNames. See ATTRIBUTION.txt for the full attribution notice.
Known limitations
- The source has no administrative tier below the okres, so
admin_name3andadmin_code3are empty.alternative_city_nameis not populated. - GeoNames' own region codes overlap the ISO numbering without matching it, so
admin_code1is derived from the region name rather than copied.
Usage
The dataset files are available in CSV format and can be accessed and downloaded using
the links provided in datapackage.yaml.
For other inquiries, contact datahub@datopian.com