# Is this address in a Colorado metro district?

Type a Colorado address to see the metropolitan districts and other special districts that contain it, and which disclosure law applies. Free, no sign-up.

Covers 3,584 active Colorado special districts mapped by the Department of Local Affairs, including 2,541 metropolitan districts, as of Nov 12, 2026. Boundaries come from the Colorado Department of Local Affairs: many were digitised from scanned drawings, so they are approximate and not a survey. Mill levies are those certified for the tax year shown, from the State of Colorado's property tax data. MapIron doesn't decide whether a disclosure is required for a sale; confirm with the county treasurer's certificate of taxes due and the district.

## For title, lending and listing software

The [special districts API](https://mapiron.com/docs/districts#colorado) returns every Colorado special district at a point with its certified mill levy (with the tax year), the bond share, assessed value, website, distance to the boundary and the disclosure statute, in one call.

```bash
curl "https://api.mapiron.com/v1/districts?lat=39.8491&lon=-105.1804&key=YOUR_KEY"
```

Start the free trial

Browse all districts

## Questions

**What is a Colorado metro district?**

A metropolitan district is a special district, usually formed for a new subdivision, that borrows to build streets, water, sewer, parks and other infrastructure and repays the debt with a property tax levy, in mills, on homes inside it. That levy is on top of the county, city, school and other districts' levies.

**What does a seller have to disclose?**

Every Colorado contract to buy and sell residential real property must include a statement that the property may be in special taxing districts that can carry general obligation debt, and that buyers should check the county treasurer's records (C.R.S. §38-35.7-101). Since August 2025, sellers of homes in metropolitan districts organized on or after January 1, 2000 must also give an estimate of the districts' property tax (C.R.S. §38-35.7-110). This page is not legal advice.

**What is a mill?**

A mill is $1 of tax for every $1,000 of assessed value. A home's assessed value is its market value times the assessment rate for its class, which state law sets, so the same levy costs different homes different amounts. The county treasurer's certificate of taxes due shows the total for a property.

**How accurate is this lookup?**

Boundaries come from the Colorado Department of Local Affairs, which says many were digitised from scanned drawings and are not authoritative. We flag points near a boundary, and a "no district found" answer is not proof that none applies: confirm with the county treasurer or assessor.

**Can I use this in my software?**

Yes: the API answers with every special district at a point, its certified mill levy (general and bond), assessed value, website and the disclosure statute, for title, lending, brokerage and listing software. It comes with the Growth plan and up, with a free 14-day trial.

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Source: https://mapiron.com/colorado-metro-district-lookup · Map data © OpenStreetMap contributors · Index: https://mapiron.com/llms.txt