Linn County Iowa GISThis feature layer contains Linn County, Iowa real estate boundary lines. This dataset is maintained by the Real Estate division of the Auditor's Office. Update Frequency Approximately daily Additional Resources Visit Linn County, Iowa on the web. Visit Linn County, Iowa GIS on the web. Visit the Linn County, Iowa GIS portal . This site is updated as needed to reflect maps, apps, and data of interest from various County departments. Contact Information Questions? Contact the GIS Division by phone at 319.892.5250 or by email .ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/8203086246dc43b2bc8f286b7ffb58a6_0engLinn County, Iowa Open Data PortalPublicReal Estate Boundary [Iowa--Linn County]Web servicesIowa--Linn CountyIowaLast Modified: 2026-01-08