State Capacity Index
195 countries · 1789–2025An index of state capacity for a long and wide panel of countries. It combines Varieties of Democracy (V-Dem) indicators of fiscal capacity, the state’s control over its territory, the rule of law, and the provision of public goods that support markets. The construction of the index is described in “An Index Measuring State Capacity, 1789–2018” (with Ryan H. Murphy), Economica 89(355): 713–745, 2022.
Explore the data
Compare countries over time, map state capacity around the world in any year, rank countries, and see which components drive each country’s score. Download every version in CSV, Stata or Excel, including the latest update built from V-Dem v16 with data to 2025.
Earlier release packages (with original Stata code and documentation)
| Version | Coverage | Contents | Download |
|---|---|---|---|
| V-Dem v14 | 1789–2023 | Updated index (Stata and Excel), plus the original v9 series | ZIP, 3.7 MB |
| V-Dem v12 | 1789–2018 | Index rebuilt from V-Dem v12 (Stata and Excel) | ZIP, 2.1 MB |
| V-Dem v9 As published | 1789–2018 | Series used in the Economica article, with Stata code to construct and evaluate it | ZIP, 1.6 MB |
The data are also hosted by the London School of Economics on the Pillars of Prosperity website. A working-paper version of the article is on SSRN.
This paper contributes to the literature on state capacity by developing a method that yields an index of state capacity with far more comprehensive data coverage across time and countries than has been possible previously. Unlike narrower measures of fiscal capacity or legal capacity, the index is more comprehensive, using data from the Varieties of Democracy dataset on fiscal capacity, a state’s control over its territory, the rule of law, and the provision of public goods used to support markets. Like the previous literature, it demonstrates that the historical prevalence of warfare predicts state capacity. Several exercises are performed to demonstrate the validity of the index in measuring state capacity.
Keywords state capacity; fiscal capacity; legal capacity; rule of law; Varieties of Democracy; institutional development · JEL H11, O43, H20, P14
O’Reilly, Colin, and Ryan H. Murphy. 2022. “An Index Measuring State Capacity, 1789–2018.” Economica 89(355): 713–745. https://doi.org/10.1111/ecca.12411