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feat(postcodes/NG): bulk-import 3,728 Nigeria postcodes via NIPOST (#1039)#1462

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feat/postcodes-nigeria
Apr 27, 2026
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feat(postcodes/NG): bulk-import 3,728 Nigeria postcodes via NIPOST (#1039)#1462
dr5hn merged 1 commit into
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feat/postcodes-nigeria

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@dr5hn dr5hn commented Apr 27, 2026

Summary

Adds 3,728 Nigeria postcodes spanning all 37 states (including the
Federal Capital Territory), sourced from the
ifeLight/nigeria-lga-postalcodes mirror of NIPOST's catalogue.

  • Coverage: 100% state resolution.
  • Granularity: LGA (Local Government Area) level — one record per
    (6-digit code, LGA) pair.

How it works

State match is case-insensitive against states.json. A 1-entry
STATE_ALIASES bridge handles the FCT (source uses "Federal Capital
Territory"; CSC uses "Abuja Federal Capital Territory").

Source & licence

Validation

  • python3 -m py_compile clean.
  • 100% of 3,728 codes match country.postal_code_regex (^(\d{6})$).
  • 100% of records resolve a valid state_id whose country_id == 161
    and whose iso2 matches state_code.
  • No auto-managed fields (id, created_at, updated_at, flag).

Test plan

  • Importer compiles and runs on a clean checkout.
  • Cross-reference validator passes (regex + FK + state_code agreement).
  • Idempotent merge verified.
  • CI pipeline green.

Refs #1039.

🤖 Generated with Claude Code

…1039)

Source: NIPOST catalogue redistributed via the ifeLight/nigeria-lga-
postalcodes mirror keyed by State -> LGA -> [postcodes]. All 37 states
resolve at 100% via case-insensitive name match, with a 1-entry alias
mapping the FCT (source: "Federal Capital Territory" -> CSC's "Abuja
Federal Capital Territory").

Refs #1039.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Copilot AI review requested due to automatic review settings April 27, 2026 13:48
@dosubot dosubot Bot added the size:XS This PR changes 0-9 lines, ignoring generated files. label Apr 27, 2026
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CSC Validation Report

PR Format

  • ✅ Description provided
  • ✅ Data source linked
  • ✅ Issue linked (recommended for data changes)
  • ✅ Justification / context provided

Labels applied: data:postcodes, large-contribution

⚠️ Large Contribution

This PR contains 3728 records. Large contributions require manual review.

Schema Validation (3728 records)

✅ All records passed validation

Cross-Reference Validation

✅ 7456 reference(s) verified

Source URL Verification

✅ 2 source URL(s) accessible


All checks passed | Status: Ready for review

@dr5hn dr5hn merged commit a28c301 into master Apr 27, 2026
1 check passed
@dr5hn dr5hn deleted the feat/postcodes-nigeria branch April 27, 2026 13:50
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2 participants