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Postal Codes Solution
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API Access

Access dataset files directly from scripts, code, or AI agents.

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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-ee/

├ .licensing-notes.md

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

├ README.md

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

└ datapackage.yml

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

README.md— documentation

https://datahub.io/logistics/postal-codes-ee/_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 Estonia, EE

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

Download

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About

Last updated: 3 September 2026
Total rows: ...
Format: CSV
File size: 515 kB
Source: GeoNames postal code database -- Estonia (EE)
License: Creative Commons Attribution 4.0

About this dataset

Estonia (EE) — internal licensing notes

Source research, 2026-09-03 — tier-1 check done, real source found but unreachable

Checked Omniva (Estonia's national postal operator) first: a real official ZIP-code download page exists at omniva.ee/en/zip-codes/zip-codes-download/ (confirmed via search: "ZIP codes are available for download in .csv and .xml formats from Omniva"). Fetched the page directly and traced through to the Estonian-language version (omniva.ee/postiindeks/sihtnumbrid-allalaadimiseks/) — the actual file link is rendered behind a JS-driven modal popup (?mode=popup, opened via an onclick handler), not a static <a href>. Static curl/WebFetch cannot reach the real download URL from this build environment. This is a genuine, disclosed tooling limitation — the source is real and better in principle, not ruled out on data-quality or licensing grounds. Worth a follow-up attempt from an environment that can execute the page's JS (a real browser or headless-browser fetch).

The source used instead — GeoNames EE

https://download.geonames.org/export/zip/EE.zip      # 5,398 rows

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

Verified directly against the raw source file:

admin_name1/admin_code1 — Maakond (county), 15/15 covered. GeoNames' own numbering (01-21, with gaps) is unrelated to ISO 3166-2:EE's real codes (37-87) — verified against Wikipedia's ISO_3166-2:EE page 2026-09-03, name-based crosswalk required (same hazard class as JP/CZ/IN/PK in this batch).
admin_name2 — Vald (parish/municipality), 71 distinct values.
admin_name3 — populated on 100% of rows (5,398/5,398) — the most complete 3-tier GeoNames-only rebuild in this session's batch.
0 exact duplicate rows, 0 (postal_code, place_name) collisions, 0 literal "nan" strings.

licence_status

{
  "channel": "postal-codes-r2",
  "source_url": "https://download.geonames.org/export/zip/EE.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, genuinely complete 3-tier single-source rebuild – the completeness alone would justify tier B even without the ISO crosswalk work.

Build — 2026-09-03

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

	value
Final rows	5,398
Counties covered	15/15
Parishes/municipalities	71
admin_name3 (town/settlement) filled	5,398/5,398 (100%)
Distinct postal codes	5,293
(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.