If you're building anything that needs country-level economic data — a dashboard, a research tool, a data viz project — you've probably discovered that finding the right API is harder than it should be.
I spent way too long evaluating options for a recent project, so here's my honest ranking of the best free options in 2026.
1. FRED (Federal Reserve Economic Data)
Best for: US economic data
URL: fred.stlouisfed.org
Auth: API key (free, instant)
If you only need US data, stop here. FRED has 800,000+ time series covering everything from GDP to mortgage rates to the price of eggs. The API is well-documented, returns JSON, and the rate limits are generous.
curl "https://api.stlouisfed.org/fred/series/observations?series_id=GDP&api_key=YOUR_KEY&file_type=json"
Limitation: US-only. If you need to compare the US to, say, Germany or India, you'll need another source.
2. World Bank API
Best for: International development indicators
URL: data.worldbank.org
Auth: None required
The World Bank's API covers 300+ indicators across 200+ countries — health, education, environment, infrastructure. No API key needed.
curl "https://api.worldbank.org/v2/country/USA/indicator/NY.GDP.MKTP.CD?format=json"
Limitation: The query syntax is clunky (you need to know indicator codes like NY.GDP.MKTP.CD), and the response format has some quirks. Also, the data updates slowly — often 1-2 years behind.
3. Statistics of the World API
Best for: Cross-country comparisons with data from multiple sources
URL: statisticsoftheworld.com/api-docs
Auth: None for basic use (100 req/day)
This one's newer but I've been using it a lot. It aggregates data from IMF, World Bank, WHO, and FRED into a single normalized API — so you don't have to stitch together four different data formats.
curl "https://statisticsoftheworld.com/api/v2/country/USA"
Returns all 440+ indicators for a country in one call. Also has endpoints for rankings, comparisons, and historical data. Free API keys available for 1,000 req/day.
Limitation: Doesn't have real-time financial data (stock prices, forex). For that, you'd need a dedicated market data API.
4. IMF World Economic Outlook
Best for: GDP, inflation, unemployment, government debt projections
URL: imf.org/external/datamapper
Auth: None
The IMF's WEO database is the gold standard for macroeconomic projections. Published twice a year (April and October) with data for 190+ countries.
Limitation: No proper REST API — you're mostly downloading Excel/CSV files or scraping their datamapper tool. That's why aggregators that pull from IMF are useful.
5. REST Countries
Best for: Country metadata (flags, currencies, languages, borders)
URL: restcountries.com
Auth: None
Not economic data per se, but incredibly useful as a companion API. Need a country's flag, currency code, or neighboring countries? This is the quickest option.
curl "https://restcountries.com/v3.1/name/japan"
Limitation: No economic indicators — just metadata.
Quick Comparison
| API | Countries | Indicators | Auth | Real-time |
|---|---|---|---|---|
| FRED | US only | 800K+ | API key | Yes |
| World Bank | 200+ | 300+ | None | No |
| Statistics of the World | 218 | 440+ | None | No |
| IMF WEO | 190+ | ~40 | None | No |
| REST Countries | 250 | 0 (metadata) | None | N/A |
My Recommendation
For most projects, I'd use FRED for US-specific data and Statistics of the World for international comparisons (since it aggregates IMF + World Bank + WHO into one API). If you need raw World Bank data with full granularity, hit the World Bank API directly.
The real bottleneck with economic data isn't finding APIs — it's normalizing data across sources that use different country codes, time formats, and update schedules. That's where aggregators save you hours of glue code.
What APIs do you use for economic data? Drop a comment — always looking for new sources.