Energy data gathered from: '1990-1996 Electricity Use: PG&E Environmental Quality Reports, 2001, 1990-1996 Natural Gas Use: California Energy Commission, 2001, Both electricity and natural gas figures have been changed to reflect revisions given to us by Andrea Gough on 1/27/07 and 1/22/08. Additional Data from Silicon Valley Environmental Partnership (SVEP), 2003 Silicon Valley Environmental Index. Data from Peter Melhus, former SVEP Board Chair & Data Source: http://www.ecdms.energy.ca.gov/

Average year-to-date SamTrans ridership data. Includes counts for SamTrans bus, paratransit, CalTrain, Shuttles, and the BART extension without the Daly City stop. SamTrans year-to-date data is reported in fiscal years that begin June 1 and end July 31 the next calendar year. This data is from 2011 to the present.

Graduation and dropout rates for high schools in San Mateo County.

Employment and unemployment data by city for places in San Mateo County. CDP is "Census Designated Place" - a recognized community that was unincorporated at the time of the 2000 Census.

1) Data may not add due to rounding. All unemployment rates shown are calculated on unrounded data.
2) These data are not seasonally adjusted.

Methodology: Monthly city and CDP labor force data are derived by multiplying current estimates of county employment and unemployment by the employment and unemployment shares (ratios) of each city and CDP at the time of the 2000 Census. Ratios for cities of 25,000 or more persons were developed from special tabulations based on household population only from the Bureau of Labor Statistics. For smaller cities and CDP, ratios were calculated from published census data.

City and CDP unrounded employment and unemployment are summed to get the labor force. The unemployment rate is calculated by dividing unemployment by the labor force. Then the labor force, employment, and unemployment are rounded.

This method assumes that the rates of change in employment and unemployment, since 2000, are exactly the same in each city and CDP as at the county level (i.e., that the shares are still accurate). If this assumption is not true for a specific city or CDP, then the estimates for that area may not represent the current economic conditions. Since this assumption is untested, caution should be employed when using these data.

Median household income for one through four person families in San Mateo County. This data is sourced from the US Department of Housing and Urban Development and is used in affordable housing indicators by the County's Department of Housing.

California State Senate Bill 272 (SB 272) requires local governments to publish an inventory of their data systems that are both a system of record and that contain information about the public. This dataset is the SB 272 inventory for the County of San Mateo. More information on SB 272 can be found in the text of the law: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160SB272

Location and capacity information for residential care facilities for the elderly in San Mateo County. Residential Care Facilities for the Elderly (RCFEs)—sometimes called "Assisted Living" or "Board and Care" facilities—are non-medical facilities that provide a level of care that includes assistance with activities of daily living.