Standardized World Income Inequality Database (SWIID), Frederick Solt

Open · redistributedCreative Commons Zero (CC0)Inequality & Poverty

Redistributable. This source is served as canonical Parquet under the license below, with attribution and provenance preserved.

Coverage

Series catalogued

1,084

Temporal coverage

1960-12-31 – 2025-12-31

Licensing & provenance

License: Creative Commons Zero (CC0)
License URL: https://creativecommons.org/publicdomain/zero/1.0/
Required attribution: SWIID by Frederick Solt (dedicated to the public domain under CC0 1.0); citation requested
Redistribution: Permitted (served here)
Commercial use: Yes
Modification: Permitted
Provider homepage: https://fsolt.org/swiid/
Provider terms: https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/LM4OWF

How to cite

Standardized World Income Inequality Database (SWIID), Frederick Solt. Retrieved from https://fsolt.org/swiid/. Compiled and redistributed by the Elkassabgi Data Library.

Processing: Retrieved from the official source, normalized to a long {series_key, obs_date, value} schema (period-start dates), de-duplicated, and stored as zstd Parquet. Compiled and redistributed by the Elkassabgi Data Library.

Access & mirrors

Download: Select & download swiid series as CSV →
API: Get a free API key, then GET /v1/series/<id>.csv
Canonical landing: https://econdatalibrary.com/swiid
Update cadence: annual
Automated refresh: live — this database is on the daily update run
Update strategy: overwrite if changed
Storage layout: single parquet (~67KB), columns series_key(SWIID:{variable}:{country_name}), obs_date(Dec-31 of year), value(float64). Variables: gini_disp, gini_disp_se, gini_mkt, gini_mkt_se, abs_red, rel_red plus any extra numeric columns found.

Full description

SWIID (Standardized World Income Inequality Database) ingest. Source: https://github.com/fsolt/swiid Author: Frederick Solt (University of Iowa) License: CC BY 4.0 Coverage: 192 countries, 1960–present, Gini coefficients (disposable + market income) Downloads the summary CSV from GitHub (no registration required). Includes: gini_disp (post-tax/transfer), gini_mkt (pre-tax/transfer), their standard errors, and absolute/relative redistribution. series_key: SWIID:{variable}:{country_iso3} e.g. SWIID:gini_disp:USA Output: data/clean_full/swiid/swiid.parquet Run: python jobs/ingest_swiid.py

Structured metadata

schema.org/Dataset (Google Dataset Search)

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    "Gini index of market (pre-tax, pre-transfer) income",
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    "Relative redistribution (market minus net, divided by market income inequality)",
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Croissant (ML-ready, schema.org JSON-LD)

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Part of the Econ Data Library catalog · metadata generated 2026-08-02 from the central registry · browse all datasets