{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/property-tax/50309/","name":"Property tax for ZIP 50309 — Des Moines, IA","description":"Property tax data for ZIP 50309 (Des Moines, Iowa), sourced from County assessors.","topic":{"slug":"property-tax","label":"Property tax","source":"County assessors","sourceUrl":"https://zipradar.org/methodology/","refreshCadence":"Annual reassessment per county","summary":"Not on zipradar yet. The plan is the county millage rate, assessment method and homestead or senior exemptions. Until then, the county assessor's portal has address-specific figures.","limitations":"Top-50 metros covered at launch (~35% of US population). Smaller counties deep-link to the assessor portal with a pending-ingestion flag pending federation."},"place":{"zip":"50309","city":"Des Moines","state":"IA","stateFull":"Iowa","county":"Polk County","countySlug":"polk-county","geo":{"latitude":41.5868,"longitude":-93.625}},"stateContext":{"topConcern":"Radon Zone 1, agricultural water nitrates","narrative":"Iowa is one of the highest-radon states in the US — uniformly Zone 1. Agricultural runoff drives EPA SDWIS nitrate violations in small rural systems and even Des Moines Water Works. Tornadoes peak April-June."},"radonZone":null,"airQuality":null,"waterQuality":null,"datePublished":"2026-04-24","dateModified":"2026-09-24","canonicalUrl":"https://zipradar.org/topic/property-tax/50309/","zipDashboardUrl":"https://zipradar.org/zip/50309/","zipDashboardApiUrl":"https://zipradar.org/api/zip/50309/","primarySourceUrl":"https://zipradar.org/methodology/","license":{"content":"CC-BY-4.0","attribution":"zipradar.org — https://zipradar.org/topic/property-tax/50309/"}}