Annual Reports, Budgets, Budget Amendments, Boundary Map Filings, and Transparency Notices are filed yearly with the Colorado Department of Local Affairs. You can find past year's filings on their website: 

Local Government Filings | Colorado Department of Local Affairs

Financial Audits and Audit Exemptions are filed yearly with the Colorado Office of the State Auditor. You can find past year's filings on their website: 

OSA: Local Government Portal

For District Governing Documents, please click here