Fast, precise boundary checks for apps

Boundary checks API for modern location‑aware products

Validate addresses, points, and shapes against official boundaries—zip codes, counties, school districts, custom service areas, and more.

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ISO‑accurate

99.99% uptime

SOC‑ready

Sub‑100ms typical

Rate‑limit smart

Try it in 30 seconds

Use our REST endpoint to check if a point falls inside selected boundaries. Replace YOUR_API_KEY with your key.

curl -X POST \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  https://api.boundaryiq.dev/v1/check \
  -d '{
    "point": { "lat": 40.472, "lng": -78.550 },
    "datasets": ["us_zips", "counties", "school_districts"]
  }'

JSON in / out Idempotent Deterministic

What you get

Ultra‑fast spatial queries with pre‑indexed datasets.
Clean, stable API with long‑term versioning.
Transparent metering & fair usage limits.
Zero‑config SDKs (JS/.NET) and copy‑paste cURL.

Response sample

{
  "point": { "lat": 40.472, "lng": -78.55 },
  "results": [
    { "dataset": "us_zips", "match": true,  "id": "16641", "name": "Gallitzin" },
    { "dataset": "counties",  "match": true,  "id": "42021", "name": "Cambria County" },
    { "dataset": "school_districts", "match": false }
  ]
}

Designed for builders

Everything you need to ship reliable boundary checks fast.

Speed that scales

Indexes + smart caching keep typical queries under 100ms.

Trustworthy datasets

Curated, versioned, and sourced from official providers.

Simple pricing

Transparent monthly tiers. No surprise overages.

Dev‑first DX

Clean REST, thoughtful errors, typed SDKs, generous sandbox.