A simple API for US GeoJSON map data
Boundaries is an easy-to-use HTTP API that allows you to retrieve geography polygons in GeoJSON format. You can use that data to draw shaded city, ZIP code, county, or state geographic boundaries. We store all of the data and make querying easy so you can focus on adding value to your business and product.
You can try it before you buy it. No credit card required.
Built for developers
You know that feeling when an API is intuitive? That's what we're going for. Rest assured that attention to detail and developer experience is an integral part of this offering.
Flexible Querying
We keep it simple so you can avoid getting in the weeds of geospatial queries. For most requests, you can just pass a latitude and longitude.
Quality Data
US Counties, States, Zips, and Places are sourced from US Census Bureau Shapefiles. Neighborhood data is sourced from Zillow's Neighborhood Data
We speak GeoJSON.
Let us handle the shapefiles and ogres. All data is returned in GeoJSON (CRS:84
), so it's ready to use in nearly any mapping tool, database, or visualization. We can even return TopoJSON if you need smaller data payloads.
We're fast.
Response time to first byte is as low as 100ms so you can work quickly. We like speed and don't like compromising to get it.
We're here for support
Get help when you need it on a paid plan. Whether it's API help, client-side mapping, or visualizations—we can help. You'll speak directly with developers.
What users are saying
it's very nicely done.
Rett Crocker
Udu
I'm pretty impressed by boundaries, this is super neat
Fabien Allanic
Developer
The API is awesome.
Gregory Gerard
Lead Web Developer at BLUELaserDigital
Pricing
We offer the following plans for API Access. Need additional features or capacity? Send us a message and we'll be happy to work with you.
Low Volume
$15 /mo
- Free 5-day trial period
- Up to 300 API calls per day
- Upgrade or cancel at any time
Standard
$29 /mo
- Free 5-day trial Period
- Access to the most up-to-date data and premium API
- Support available on request
- 1,000 requests per day
- Upgrade or cancel at any time
Business
$79 /mo
- Free 5-day trial period
- Access to the most up-to-date data and premium API
- Premium technical support
- 100,000 requests per day
- Highest request throughput
- Cancel at any time