State Municipal Index • IA

Iowa Property Tax Drift Index

State Avg Drift Score

64/100

Iowa Municipal Risk Briefing

State Comptroller & US Census Bureau (IA)August 2026

Iowa maintains an average TaxDrift Score of 64/100 across monitored jurisdictions. Overlapping municipal bond issuances and assessment equalization rollbacks determine local millage carrying costs under statutory rules.

Population

3,207,004

Avg Effective Tax Rate

1.1%

Total Tracked Muni Debt

$14.4B

Counties Monitored

Statutory Tax Caps & Voter-Approval Rules (IA)

Rollback calculation limits statewide residential assessment growth to 3% per year.

Audited Counties in Iowa

Iowa County Tax Drift Leaderboard

Showing 0 of 0 Audited Jurisdictions

No county records match the active filter criteria.