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API Access

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Dataset Files

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.

/logistics/postal-codes-sk/

├ .licensing-notes.md

https://datahub.io/logistics/postal-codes-sk/_r/-/.licensing-notes.md

├ README.md

https://datahub.io/logistics/postal-codes-sk/_r/-/README.md

└ datapackage.yml

https://datahub.io/logistics/postal-codes-sk/_r/-/datapackage.yml

Key Files

Start with these files — they give you everything you need to understand and access the dataset.

datapackage.yml— metadata & schema

https://datahub.io/logistics/postal-codes-sk/_r/-/datapackage.yml

README.md— documentation

https://datahub.io/logistics/postal-codes-sk/_r/-/README.md

Typical Usage

1. Fetch datapackage.yml to inspect schema and resources
2. Download data resources listed in datapackage.yml
3. Read README.md for full context

Data Files

Postal Codes Data Resource for Slovakia, SK

Field	Description	Title
country_code	ISO 3166-1 alpha-2 code for the country.	Country Code
postal_code	Postal code for the location.	Postal Code
place_name	Name of the city, town, or place.	Place Name
admin_name1	Primary administrative division (e.g., state, region).	Administrative Name 1
admin_code1	Code for the primary administrative division.	Administrative Code 1
admin_name2	Secondary administrative division (e.g., county, district).	Administrative Name 2
admin_code2	Code for the secondary administrative division.	Administrative Code 2
admin_name3	Tertiary administrative division (e.g., municipality, borough).	Administrative Name 3
admin_code3	Code for the tertiary administrative division.	Administrative Code 3
latitude	Latitude coordinate of the place.	Latitude
longitude	Longitude coordinate of the place.	Longitude
accuracy	Accuracy level of the latitude and longitude coordinates.	Accuracy
alternative_city_name	Alternative name(s) for the city or place.	Alternative City Name

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About

Last updated: 3 September 2026
Total rows: ...
Format: CSV
File size: 379 kB
Source: GeoNames postal code database -- Slovakia (SK)
License: Creative Commons Attribution 4.0

About this dataset

Slovakia (SK) — internal licensing notes

Source research, 2026-09-03 — tier-1 check done before defaulting to GeoNames

Checked Slovenská pošta (the official postal operator) first: posta.sk/psc offers only a web search tool (address → PSC lookup), no bulk download. A third-party portal (posty.sk) mentions using an "official XML feed" from Slovenská pošta but does not expose a public bulk download link. No official open bulk source found — GeoNames used, with confidence, because it turns out to already carry the exact real ISO region codes (see below), not as a default-of-convenience.

The source — GeoNames SK

https://download.geonames.org/export/zip/SK.zip      # 5,233 rows

Licence CC-BY-4.0, verified against export/zip/readme.txt on 2026-09-03 — Slovakia carries no per-country caveat.

Verified directly against the raw source file:

admin_name1/admin_code1 — Kraj (region), 8/8 covered. GeoNames' own 2-letter codes (BC, BL, KI, NI, PV, TC, TA, ZI) already match ISO 3166-2:SK exactly — verified against Wikipedia's ISO_3166-2:SK page 2026-09-03. Unlike JP/CZ/IN/PK in this batch, there is no false-friend or unrelated-numbering hazard here — just prepend SK-.
admin_name2 — Okres (district), 79 distinct values — matches Slovakia's real 79 okresy.
admin_name3 — empty on all 5,233 rows. No third admin tier in this source.
0 exact duplicate rows, 0 (postal_code, place_name) collisions, 0 literal "nan" strings, clean integer accuracy values (1/3/4).

licence_status

{
  "channel": "postal-codes-r2",
  "source_url": "https://download.geonames.org/export/zip/SK.zip",
  "licence_id": "CC-BY-4.0",
  "collected_at": "2026-09-03",
  "decision": "compatible",
  "decided_by": "claude-session-2026-09-03",
  "decided_at": "2026-09-03"
}

Proposed tier

B ($49). Clean, complete single-source rebuild – 2 tiers, 0 collisions, correct ISO codes verified rather than assumed.

Build — 2026-09-03

Built via datasets/sk/scripts/build_postal_codes_product.py.

	value
Final rows	5,233
Kraje covered	8/8
Okresy	79
Distinct postal codes	3,480
(postal_code, place_name) collisions	0

Frictionless validation: valid: True.

Status: built and validated locally only. Nothing published to R2, nothing committed to git yet.