{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/zoning/50309/","name":"Zoning for ZIP 50309 — Des Moines, IA","description":"Zoning data for ZIP 50309 (Des Moines, Iowa), sourced from Municipal planning departments.","topic":{"slug":"zoning","label":"Zoning","source":"Municipal planning departments","sourceUrl":"https://zipradar.org/methodology/","refreshCadence":"Annual plus ad-hoc rezonings","summary":"Not on zipradar yet. The plan is the ZIP's main zoning classes in plain English. Until then, the city planning department's official map is the source.","limitations":"Top-25 cities covered at launch. Houston has no zoning laws (special handling). Elsewhere, zipradar links to the planning department's portal."},"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/zoning/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/zoning/50309/"}}