latlng · Python SDK

The official Python SDK for latlng.work — fast, open-data geocoding and places API powered by OpenStreetMap + Overture Maps.

• Forward geocoding — address/place name → coordinates
• Reverse geocoding — coordinates → address
• Places nearby — POIs around a lat/lon
• Places search — full-text place search
• Autosuggest — typeahead suggestions
• Categories — browse available place types

Both sync and async clients included. httpx is the only dependency.

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Installation

pip install latlng

Get an API key → dash.latlng.work
Free tier: 3,000 geocodes/day. No credit card required.

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Quick Start

from latlng import LatlngClient

# Get a free API key at https://dash.latlng.work/
client = LatlngClient(api_key="latlng_xxxxx")  # or omit for anonymous (rate-limited)

# Forward geocode
result = client.geocode("Eiffel Tower, Paris")
print(result.first.lat, result.first.lon)
# 48.8584 2.2945

# Reverse geocode
result = client.reverse(48.8584, 2.2945)
print(result.first.name, result.first.city)
# Eiffel Tower Paris

# Places nearby
places = client.places.nearby(lat=48.8584, lon=2.2945, radius=500)
for place in places:
    print(place.name, place.category, f"{place.distance_m}m")

# Full-text place search
results = client.places.search("Louvre", lat=48.8584, lon=2.2945)

# Autosuggest (typeahead)
suggestions = client.places.autosuggest("Eiff", lat=48.858, lon=2.294)

# All place categories
categories = client.places.categories()
for cat in categories:
    print(cat.category, cat.count)

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Async Usage

import asyncio
from latlng import AsyncLatlngClient

async def main():
    async with AsyncLatlngClient(api_key="latlng_xxxxx") as client:
        result = await client.geocode("Tokyo")
        print(result.first.lat, result.first.lon)

        places = await client.places.nearby(lat=35.6762, lon=139.6503, radius=1000)
        for place in places:
            print(place.name)

asyncio.run(main())

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API Reference

LatlngClient / AsyncLatlngClient

Constructor Arg	Type	Default	Description
api_key	str | None	None	API key (latlng_xxxxx). Anonymous if omitted.
base_url	str	https://api.latlng.work	Override API base URL.
timeout	float	10.0	HTTP timeout in seconds.

Geocoding

client.geocode(query, *, limit=5, lang=None, lat=None, lon=None)

Forward geocode a query string. Returns GeocodingResponse.

Param	Type	Description
query	str	Address or place name
limit	int	Max results (default 5)
lang	str	Language code (e.g. "en")
lat, lon	float	Bias results near this location

client.reverse(lat, lon, *, limit=1, lang=None)

Reverse geocode coordinates. Returns GeocodingResponse.

Places

client.places.nearby(lat, lon, *, radius=1000, type=None, limit=20)

POIs near a location. Returns NearbyResponse.

client.places.search(q, *, lat=None, lon=None, type=None, country=None, limit=20)

Full-text place search. Returns SearchResponse.

client.places.autosuggest(q, *, lat=None, lon=None, limit=10)

Typeahead suggestions. Returns AutosuggestResponse.

client.places.categories()

All available place categories. Returns CategoriesResponse.

Response Models

Model	Key Fields
GeocodingResult	lat, lon, name, city, country, postcode, state
Place	id, name, lat, lon, category, distance_m, country, region, locality
Category	category, count

All collection responses (GeocodingResponse, NearbyResponse, etc.) support iteration with for item in response.

Exceptions

Exception	When
LatlngRateLimitError	HTTP 429 — rate limit hit
LatlngAuthError	HTTP 401/403 — bad API key
LatlngUnavailableError	HTTP 503 — upstream down
LatlngAPIError	Any other non-2xx error

from latlng import LatlngClient
from latlng.exceptions import LatlngRateLimitError

client = LatlngClient()
try:
    result = client.geocode("Berlin")
except LatlngRateLimitError:
    print("Rate limit hit — get a free key at https://dash.latlng.work/")

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Rate Limits

Plan	Geocode	Reverse	Places	Period
Anonymous	30	10	10	/day
Free	3,000	300	500	/day
Pro	1,000,000	100,000	500,000	/month
Enterprise	Unlimited	Unlimited	Unlimited	/month

→ Get a free API key at dash.latlng.work

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License

MIT