7 Best APIs for Open-Data in Nigeria

Public access to Nigeria's economic indicators including CPI, GDP, population statistics, trade data, and agricultural information. Provides data visualization and download tools for research, dashboards, and analytics purposes.

Legislative data API providing access to bills, senate members, house representatives, committees, and parliamentary proceedings. Enables tracking of bills from first reading to presidential assent with real-time legislative information.

Nigeria Geo Data API is a free, open-source dataset and lightweight API that provides comprehensive administrative boundary data for every layer of Nigerian geography — from the federal level all the way down to individual wards. Built by the open-source community and maintained on GitHub, this resource is invaluable for developers, researchers, civic technologists, and government institutions who need accurate, machine-readable data about Nigeria's administrative divisions without paying for a commercial data license. The dataset covers all 36 Nigerian states plus the Federal Capital Territory (FCT, Abuja), every Local Government Area (LGA) within each state, and the ward-level subdivisions within each LGA. Nigeria has 774 officially recognized LGAs and thousands of wards, making this granular, hierarchical data difficult to assemble from scratch. The Nigeria Geo Data API solves this by offering it all in a structured JSON format ready for immediate consumption. Because this is a GitHub-hosted open dataset, there is no authentication required and no rate limiting enforced. Developers can clone the repository, download JSON files directly, or fetch data programmatically via GitHub's raw file URLs. This makes it especially appealing for projects with tight budgets, offline requirements, or situations where adding a third-party API dependency introduces too much operational risk. **Key Data Coverage** The Nigeria Geo Data API provides hierarchical administrative data that mirrors the official structure of Nigerian governance. At the top level, you get all 36 states and the FCT with their official names and codes. Within each state, the full list of LGAs is provided with their names mapped to the parent state. Ward data goes a level deeper, associating each ward with its parent LGA and state. This kind of structured data is essential for building consistent address forms. Without a reliable source of Nigerian LGAs, developers typically hard-code partial lists, scrape Wikipedia, or use inconsistent data from different sources — leading to mismatches and data quality issues. The Nigeria Geo Data API provides a single source of truth for this administrative hierarchy. **Primary Use Cases in Nigeria** For e-commerce platforms and fintech apps, the most common use is populating address registration forms. When a user fills in their delivery or home address, dropdowns for State, LGA, and Ward should cascade based on selections — for example, selecting Lagos State populates the LGA dropdown with Ikeja, Lagos Island, Surulere, and so on. The Nigeria Geo Data API provides the raw data to make this possible with minimal setup. For government and civic technology projects, this dataset enables building administrative dashboards that display statistics broken down by state or LGA. Election result visualization tools, health facility mapping systems, and agricultural data portals all need accurate LGA and ward boundaries to aggregate and display data correctly. Organizations like NOIPolls, BudgIT, and similar civic data platforms benefit from reliable administrative data. For NGOs, development agencies, and health organizations operating in Nigeria, ward-level data is critical for planning grassroots interventions. Programs targeting specific communities — whether for vaccine distribution, school enrollment campaigns, or agricultural extension services — need to know ward boundaries and names to coordinate field agents and track coverage accurately. **Developer Integration Approach** Since this is a GitHub-hosted dataset, integration works differently from a traditional REST API. Developers typically download the JSON files and bundle them directly into their application (ideal for mobile apps needing offline capability), fetch the raw GitHub URLs at build time to pre-generate static data, or use a CDN-cached copy for web apps that need fast data loading. For forms and dropdowns, a typical implementation loads all state data on page load, then dynamically filters LGAs when a state is selected. This client-side approach works entirely offline once the JSON is loaded, making it suitable for field survey apps used in areas with intermittent connectivity. **Data Format and Structure** The data is structured as nested JSON with clear parent-child relationships between states, LGAs, and wards. Each entry contains a name field and an id or code field for consistent referencing. This structure makes it straightforward to implement search, filtering, and hierarchical selection interfaces in React, Vue, Angular, or any JavaScript framework. Backend applications can import the JSON directly into a database for normalized storage and fast querying. **Open Source and Community Maintained** Being open-source means the dataset benefits from community contributions and corrections. If a new LGA is created or a name changes through official government action, contributors can update the repository. Developers using this dataset should periodically check for updates to ensure their applications reflect current administrative boundaries. The permissive license allows use in commercial applications without royalty fees. For any Nigerian developer building location-aware applications, the Nigeria Geo Data API is an essential reference that eliminates the tedious work of compiling administrative data from scratch. It is the foundation upon which accurate Nigerian address systems are built.

NG Data API is a comprehensive REST API designed specifically for Nigerian administrative and demographic data, providing developers with structured access to geographic information spanning states, local government areas, local councils, and population statistics. Unlike generic global geographic APIs, NG Data API is built with Nigerian data structures in mind, making it the go-to resource for applications that need authoritative, well-organized Nigerian location data through a modern API interface. The platform offers both a free tier and paid subscription plans, making it accessible for individual developers experimenting with location features while also supporting production-grade deployments for startups and enterprises. API Key authentication keeps access controlled and usage trackable, while the freemium model ensures that small-scale Nigerian developers and civic technologists can access the data without upfront financial commitment. **What NG Data API Provides** The core offering covers Nigeria's administrative hierarchy: all 36 states plus the Federal Capital Territory, their constituent LGAs, and the local councils within each LGA. This three-level hierarchy mirrors how Nigerian government administration is organized and how most Nigerian users think about their location — "I live in Yaba, which is in Lagos Mainland LGA, which is in Lagos State." Beyond administrative boundaries, NG Data API includes demographic data such as population estimates that are useful for market sizing, resource allocation planning, and data visualization. Being able to attach population context to geographic units transforms the API from a simple location lookup into a planning and analytics tool. The REST architecture means responses come as clean JSON that can be consumed by any web or mobile framework. Standard HTTP methods and predictable endpoint structures make integration straightforward for developers familiar with RESTful patterns. **Use Cases for Nigerian Businesses** For e-commerce and delivery platforms like Jumia, Konga, and emerging Nigerian marketplaces, NG Data API solves a persistent pain point: building accurate address forms. Nigerian addresses are notoriously inconsistent — some users write abbreviated LGA names, some omit them, and some use informal neighborhood names that do not correspond to any official LGA. By driving address forms with authoritative NG Data API data, platforms can enforce consistent address data collection from day one, reducing failed deliveries and improving logistics efficiency. For fintech companies regulated by the Central Bank of Nigeria, accurate address data is a KYC requirement. Customer home addresses submitted during account opening must be verifiable and correctly formatted. NG Data API-driven address forms ensure that submitted state and LGA combinations are always valid, reducing the manual review burden on compliance teams. For logistics and last-mile delivery companies, NG Data API enables intelligent zone management. By mapping delivery areas to official LGAs, companies can define pricing zones, assign courier teams by LGA coverage, and build routing logic based on administrative boundaries rather than imprecise custom polygons. **Civic Technology and Government Applications** Nigerian civic tech organizations rely on consistent administrative data to power dashboards that track education outcomes, health metrics, infrastructure gaps, and budget allocation by LGA. NG Data API's structured data feeds these visualizations and analytics engines. Organizations like Connected Development, BudgIT, and NigeriaElections.org benefit from having a single, reliable source for LGA-level data rather than assembling it from multiple inconsistent sources. Government agencies building digital service portals — for land registration, business permits, tax administration — need to present standardized location data to citizens. Integrating NG Data API into these systems ensures that citizens can find their correct administrative unit and that submitted forms route to the right departmental office. **Population Data for Market Research** The demographic component of NG Data API is particularly valuable for market research and business expansion planning. Nigerian startups assessing which LGAs to expand into next can use population data from the API to prioritize high-density areas. Advertisers targeting regional campaigns can weight their spend toward high-population LGAs. Healthcare companies planning clinic rollouts can identify underserved high-population areas. **Integration Pattern for Web Applications** A typical web integration fetches all states on application load and caches them client-side. When a user selects a state, a second API call fetches the LGAs for that state. A third call, triggered on LGA selection, fetches local councils if needed. This progressive-loading pattern keeps initial page load fast while ensuring dropdowns are always populated with fresh, accurate data from the API. **Freemium Model and Scaling** The free tier is generous enough for development, testing, and small-scale production use. As applications grow and API call volumes increase, upgrading to a paid plan provides higher rate limits and access to additional data fields. This makes NG Data API suitable for projects at every stage of the product lifecycle. For any Nigerian developer, NG Data API is one of the most practical location data tools available — purpose-built for the Nigerian context, easy to integrate, and affordable to scale as applications grow.

Open Holidays API is a free, open-source public holiday data API that provides community-maintained holiday datasets for multiple countries, accessible without any API key or authentication requirement. Built as a community project and hosted openly, Open Holidays API embodies the open-source ethos of freely available public data — holiday dates are public information, and Open Holidays makes them available as a clean REST API that any developer worldwide can use without registration or payment. For Nigerian developers building scheduling features, calendar tools, or public holiday awareness into their applications on a zero-budget basis, Open Holidays provides immediate, friction-free access to structured holiday data. The API returns holiday data by country code and year, providing the holiday name (in the country's language and optionally in English), date, and holiday type classification. For Nigeria (country code NG), the API returns the statutory national public holidays that apply across the country, giving Nigerian app developers the base dataset needed for business day calculations, payroll processing, and scheduling features without the cost of a commercial holiday API. Zero-authentication access is Open Holidays API's most developer-friendly characteristic. There is no API key to obtain, no registration form to complete, and no rate limit tied to an account — simply call the endpoint with the country code and year parameters and receive the holiday data. For Nigerian hackathon participants, side project developers, open-source contributors, and students learning API integration, this frictionless access makes Open Holidays the fastest way to get started with public holiday data. Open-source community model means that the holiday data is maintained by contributors around the world, with corrections and additions submitted through the project's repository. For countries with active communities, the coverage is excellent; for less-represented countries, accuracy should be verified against official government sources before using in compliance-sensitive production applications. Nigerian developers using Open Holidays for critical scheduling should cross-verify the Nigerian holiday dates against official Federal Government of Nigeria pronouncements, particularly for Islamic holidays whose dates are announced by the Sultanate each year. Cross-African scheduling support through Open Holidays covers multiple African countries, making it useful for pan-African applications that need holiday awareness across West Africa, East Africa, and Southern Africa simultaneously. Nigerian conglomerates with operations in Ghana, Kenya, and South Africa can query all three countries' holiday calendars from one API endpoint, supporting regional scheduling and operations coordination. Developer prototyping and teaching are ideal use cases for Open Holidays API. Nigerian coding bootcamps, universities teaching web development, and developers building proof-of-concept applications benefit from the ability to integrate real, live holiday data without any account setup — keeping the learning focus on integration patterns rather than on account management and API key provisioning. The Open Holidays API is hosted at openholidaysapi.org and is available completely free with no usage restrictions documented. The project is open-source and welcomes contributions to expand country coverage and improve data accuracy. Nigerian developers who identify inaccuracies in the Nigeria holiday dataset are encouraged to contribute corrections to the GitHub repository.