Official Certified Neighborhood Council boundaries in the City of Los Angeles created and maintained by the Bureau of Engineering / GIS Mapping Division.

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Zoning district boundaries by type and classification. Chicago is divided into zoning districts that regulate land use activities across the city. Data is based on the Chicago Zoning Ordinance and Land Use Ordinance http://bit.ly/9eqawi. Zoning Types are defined in this ordinance. To view or use these files, compression software and special GIS software, such as ESRI ArcGIS, is required. For additional information about business uses, review the License/Zoning Reference (LZR) Guide http://bit.ly/vvGzne, which is based on the Municipal Code and is intended to assist business owners in determining the proper zoning district and primary business license for specific business types. Update Frequency: Data is updated monthly. Related Applications: Zoning Map https://gisapps.cityofchicago.org/zoning/

Neighborhood map atlas district areas are derived from the Seattle City Clerk's Office Geographic Indexing Atlas. These are the largest neighborhood areas and have been supplemented with alternate names from other sources in 2020. They are subdivided further into the neighborhood map atlas sub-areas called neighborhoods. The sub-neighborhoods field contains a comma delimited list of all the sub-areas and their alternate names.,

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