Metro district tax share
Sources
This tool is built from publicly available Arapahoe County documents. Always verify numbers against official county sources.
How the data is used
The calculator results are based on numbers you enter from the county site or your bill. The optional metro district dropdown (when you check "I know my metro district's name") is populated from a static JSON file generated offline from the county's PDFs.
Source of truth for the dropdown is the "Mill Levy Public Information Form". We extract it offline into public/data/metro-levies-2025.json. The app uses each district's aggregated debt service mills and total mills to pre-fill the debt value and show the metro district's total share.
Code
Source code is available on GitHub (opens in a new tab).
Primary documents
2025 Taxing District Levy Percentage (Arapahoe County Assessor)
Supporting reference (not used to generate the app's JSON). Useful for corroboration and context by taxing district and tax area.
Mill Levy Public Information Form (C.R.S. 39-1-125(1)(c))
Source of truth for the metro district dropdown. Debt service and total mills are extracted offline from this PDF into the app's JSON.
2025 Certification of Levies and Revenues
Supporting reference (not used to generate the app's JSON). Useful to cross-check levy certification and for future updates.