How to Choose the Best Geocoding API in 2026
There are 86 Geocoding APIs in our directory. Of these, 39 require no authentication, making them ideal for quick prototyping. 39 are rated beginner-friendly.
Scores last tested: 2026-09-21
Quick Comparison: Top 10 Geocoding APIs
Ranked by API Score. Measured means we called a real endpoint of that API; Est. means the score is derived from metadata because the endpoint could not be called without credentials. Discontinued APIs are excluded.
| Name | API Score | Auth | HTTPS | CORS | Difficulty |
|---|---|---|---|---|---|
| Nominatim | 93 A+ Measured | No Auth | ✓ | ✓ | Beginner |
| Postali | 93 A+ Measured | No Auth | ✓ | ✓ | Beginner |
| administrative-divisons-db | 92 A+ Est. | No Auth | ✓ | ✓ | Beginner |
| GeographQL | 92 A+ Est. | No Auth | ✓ | ✓ | Beginner |
| ipapi.co | 92 A+ Est. | No Auth | ✓ | ✓ | Beginner |
| GeoJS | 89 A Measured | No Auth | ✓ | ✓ | Beginner |
| Bing Maps | 87 A Est. | API Key | ✓ | ? | Intermediate |
| Geokeo | 87 A Est. | No Auth | ✓ | ✓ | Beginner |
| geoPlugin | 87 A Est. | No Auth | ✓ | ✓ | Beginner |
| Graph Countries | 87 A Est. | No Auth | ✓ | ? | Beginner |
Free Geocoding APIs (No Auth)
These APIs require no API key or signup. Start using them immediately.
administrative-divisons-db
⭐ Beginner's PickThe Administrative Divisions DB API provides a structured list of all administrative divisions (states, provinces, regions, cities) for countries around the world.
adresse.data.gouv.fr
adresse.data.gouv.fr provides programmatic access to address database of france, geocoding and reverse via REST API.
Airtel IP
⭐ Beginner's PickAirtel IP is a free, no-auth IP geolocation API that aggregates data from multiple sources to return the country associated with any given IP address.
bng2latlong
⭐ Beginner's Pickbng2latlong is a simple, free API that converts British National Grid (OSGB36) easting and northing coordinates into standard WGS84 latitude and longitude.
Cartes.io
⭐ Beginner's PickCartes.io is a free API that lets you create maps and add custom markers without signing up.
Cep.la
Cep.la is a free Brazilian API that lets you look up address information using a Brazilian postal code (CEP).
Try It in 5 Minutes: bng2latlong
Quick implementation example using bng2latlong.
Using curl
curl "https://api.getthedata.com/bng2latlong/651409/313177"
JavaScript
const url = "https://api.getthedata.com/bng2latlong/651409/313177";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); New to APIs? Read our Getting Started Guide →
Frequently Asked Questions
How many Geocoding APIs are available?
There are 86 Geocoding APIs in our directory as of 2026.
Are there free Geocoding APIs?
Yes, 39 Geocoding APIs require no authentication and are completely free to use.
What is the easiest Geocoding API to use?
bng2latlong is one of the easiest to get started with. It is rated as beginner-level and requires no authentication.
Do I need an API key for Geocoding APIs?
It depends. 39 APIs need no authentication, 43 require an API key, and 1 use OAuth.