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District of Columbia Open Data

Washington DC's GIS datasets as queryable ArcGIS JSON

🏛 GovernmentUNMONITORED
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.

—HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · unmonitored
ON PROBE SCHEDULE

We probe a documented GET and expect 2xx JSON — full uptime and health score. Open provider docs ↗

Uptime historystarts after first probe

On our probe schedule. Uptime charts appear after the first check lands.

Example responsefrom provider docs — not verified by us
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 · 6On scheduleFULL DOCS ↗
On schedule — GET /39/query?where=1%3D1&outFields=OFFENSE,METHOD,SHIFT,BLOCK&f=json&resultRecordCount=1&returnGeometry=false awaits first probe
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

Not tracked yet. Shape-change history starts once this API joins our probe schedule.

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?

District of Columbia Open Data is catalogued but not yet on our probe schedule, so we don't publish a live status for it. Check the provider's own status page or docs for its current state.