This collection of data is produced by the County of San Mateo Information Services Department. Data layers in this collection cover a variety of themes, including: parcels, boundaries, zoning, points of interest, water supply management, public safety, and utilities. These data were downloaded from the San Mateo County Open Data Portal (https://data.smcgov.org/) and the County Information Services page (http://isd.smcgov.org/gis-data-download) on August 14, 2015, and the United States Census Bureau Geography page (https://www.census.gov/geo/maps-data/data/tiger-line.html) on August 17, 2015. System requirements: Geographic Information Systems (GIS) software that reads ESRI shapefile format.