Linn County Iowa GISThis feature layer contains a composite of control points collected from a variety of projects for Linn County, Iowa, the City of Cedar Rapids, and the City of Marion. Update Frequency As needed 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/d73bc2de253c4b27be33d3cf1dadf48f_0engLinn County, Iowa Open Data PortalPublicSurvey Monument [Iowa--Linn County]Web servicesIowa--Linn CountyIowaLast Modified: 2021-08-19