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District of Columbia Open Data

Washington DC's GIS datasets as queryable ArcGIS JSON

🏛 GovernmentHEALTHYchecked 9h ago
AUTH NONECORS ✓AGENT ✓HTTPS ✓COMMERCIAL ?

Washington DC serves its open datasets through public ArcGIS REST feature services. This keyless query hits the Metropolitan Police crime-incidents layer and returns structured JSON with offense, method, shift and block. Swap the layer id for other city data.

89HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: 89 · healthy
Uptime history
100%90 days
100%30 days
852P50 · ms
1984P95 · ms
operationalpartialdownno data
Response time · last 48 checks
Fastest 149 ms, slowest 1610 ms, most recent 398 ms.
Live response samplecaptured by our last successful check
GET https://maps2.dcgis.dc.gov/dcgis/rest/services/FEEDS/MPD/MapServer/39/query?where=1%3D1&outFields=OFFENSE,METHOD,SHIFT,BLOCK&f=json&resultRecordCount=1&returnGeometry=false

{
  "displayFieldName": "CCN",
  "features": [
    {
      "attributes": {
        "OFFENSE": "ROBBERY",
        "METHOD": "GUN",
        "SHIFT": "DAY",
        "BLOCK": "12TH STREET NE AND VARNUM STREET NE"
      }
    }
  ]
}
Call itcurl · fetch · python
curl "https://maps2.dcgis.dc.gov/dcgis/rest/services/FEEDS/MPD/MapServer/39/query?where=1%3D1&outFields=OFFENSE,METHOD,SHIFT,BLOCK&f=json&resultRecordCount=1&returnGeometry=false"
const res = await fetch("https://maps2.dcgis.dc.gov/dcgis/rest/services/FEEDS/MPD/MapServer/39/query?where=1%3D1&outFields=OFFENSE,METHOD,SHIFT,BLOCK&f=json&resultRecordCount=1&returnGeometry=false");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://maps2.dcgis.dc.gov/dcgis/rest/services/FEEDS/MPD/MapServer/39/query?where=1%3D1&outFields=OFFENSE,METHOD,SHIFT,BLOCK&f=json&resultRecordCount=1&returnGeometry=false")
print(res.json())
Endpoints · 6HealthyFULL DOCS ↗
Monitored path responding — GET /39/query?where=1%3D1&outFields=OFFENSE,METHOD,SHIFT,BLOCK&f=json&resultRecordCount=1&returnGeometry=false852 mschecked 9h ago
GET/39/query?where=1%3D1&outFields=OFFENSE,METHOD,SHIFT,BLOCK&f=json&resultRecordCount=1&returnGeometry=falsePROBED

Washington DC's GIS datasets as queryable ArcGIS JSON

GET/39

Resource details by ID (example: 39).

GET/39/1

39 details by ID (example: 1).

GET/39?limit=10

Resource details by ID (example: 39).

GET/39/search?q=test

Search by query parameters.

GET/39/query?limit=5

Query — documented GET route.

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.

District of Columbia Open Data: common questions

Is District of Columbia Open Data free to use?

Yes — District of Columbia Open Data is a free government API. Free tier: Free — limits not published. Whether the free tier allows commercial use is unclear — check the provider docs.

Does District of Columbia Open Data need an API key?

No — District of Columbia Open Data needs no API key or signup. You can call it straight away; rate limits still apply (Unpublished).

Can I call District of Columbia Open Data from the browser?

Yes — District of Columbia Open Data returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is District of Columbia Open Data up right now?

As of our last scheduled check, District of Columbia Open Data is healthy with 100% uptime over 90 days and a 852 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.