The land area of California was 155,779 in 2010.

Land Area

Water Area

Land area is a measurement providing the size, in square miles, of the land portions of geographic entities for which the Census Bureau tabulates and disseminates data. Area is calculated from the specific boundary recorded for each entity in the Census Bureau's geographic database. Land area is based on current information in the TIGER® data base, calculated for use with Census 2010.

Water Area figures include inland, coastal, Great Lakes, and territorial sea water. Inland water consists of any lake, reservoir, pond, or similar body of water that is recorded in the Census Bureau's geographic database. It also includes any river, creek, canal, stream, or similar feature that is recorded in that database as a two- dimensional feature (rather than as a single line). The portions of the oceans and related large embayments (such as Chesapeake Bay and Puget Sound), the Gulf of Mexico, and the Caribbean Sea that belong to the United States and its territories are classified as coastal and territorial waters; the Great Lakes are treated as a separate water entity. Rivers and bays that empty into these bodies of water are treated as inland water from the point beyond which they are narrower than 1 nautical mile across. Identification of land and inland, coastal, territorial, and Great Lakes waters is for data presentation purposes only and does not necessarily reflect their legal definitions.

Above charts are based on data from the U.S. Census American Community Survey | ODN Dataset | API - Notes:

1. ODN datasets and APIs are subject to change and may differ in format from the original source data in order to provide a user-friendly experience on this site.

2. To build your own apps using this data, see the ODN Dataset and API links.

3. If you use this derived data in an app, we ask that you provide a link somewhere in your applications to the Open Data Network with a citation that states: "Data for this application was provided by the Open Data Network" where "Open Data Network" links to http://opendatanetwork.com. Where an application has a region specific module, we ask that you add an additional line that states: "Data about REGIONX was provided by the Open Data Network." where REGIONX is an HREF with a name for a geographical region like "Seattle, WA" and the link points to this page URL, e.g. http://opendatanetwork.com/region/1600000US5363000/Seattle_WA

Geographic and Area Datasets Involving California

  • API

    Next Generation Simulation (NGSIM) Vehicle Trajectories and Supporting Data

    datahub.transportation.gov | Last Updated 2024-05-20T18:02:47.000Z

    Click “Export” on the right to download the vehicle trajectory data. The associated metadata and additional data can be downloaded below under "Attachments". Researchers for the Next Generation Simulation (NGSIM) program collected detailed vehicle trajectory data on southbound US 101 and Lankershim Boulevard in Los Angeles, CA, eastbound I-80 in Emeryville, CA and Peachtree Street in Atlanta, Georgia. Data was collected through a network of synchronized digital video cameras. NGVIDEO, a customized software application developed for the NGSIM program, transcribed the vehicle trajectory data from the video. This vehicle trajectory data provided the precise location of each vehicle within the study area every one-tenth of a second, resulting in detailed lane positions and locations relative to other vehicles. Click the "Show More" button below to find additional contextual data and metadata for this dataset. For site-specific NGSIM video file datasets, please see the following: - NGSIM I-80 Videos: https://data.transportation.gov/Automobiles/Next-Generation-Simulation-NGSIM-Program-I-80-Vide/2577-gpny - NGSIM US-101 Videos: https://data.transportation.gov/Automobiles/Next-Generation-Simulation-NGSIM-Program-US-101-Vi/4qzi-thur - NGSIM Lankershim Boulevard Videos: https://data.transportation.gov/Automobiles/Next-Generation-Simulation-NGSIM-Program-Lankershi/uv3e-y54k - NGSIM Peachtree Street Videos: https://data.transportation.gov/Automobiles/Next-Generation-Simulation-NGSIM-Program-Peachtree/mupt-aksf

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    San Mateo County And California Crime Rates 2000-2014

    performance.smcgov.org | Last Updated 2016-08-31T20:40:07.000Z

    Violent and property crime rates per 100,000 population for San Mateo County and the State of California. The total crimes used to calculate the rates for San Mateo County include data from: Sheriff's Department Unincorporated, Atherton, Belmont, Brisbane, Broadmoor, Burlingame, Colma, Daly City, East Palo Alto, Foster City, Half Moon Bay, Hillsborough, Menlo Park, Millbrae, Pacifica, Redwood City, San Bruno, San Carlos, San Mateo, South San Francisco, Bay Area DPR, BART, Union Pacific Railroad, and CA Highway Patrol.

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    Beach Water Quality

    data.marincounty.org | Last Updated 2024-06-24T17:40:53.000Z

    Contains results of weekly water samples collected at beaches in Marin County, CA. The weekly samples are collected and analyzed for Total Coliform, E. coli, and Enterococcus bacteria. Advisories are posted at a beach when a recreational standard for these indicator organism is exceeded. Weekly results are published each year starting in April and continuing through October. Sample results in this dataset start with the week of May 29, 2017. If a sample result is labeled "N/A" it means that no results are available from the beach location that week.

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    Housing Affordability Index- California and San Mateo County

    performance.smcgov.org | Last Updated 2021-05-18T20:13:34.000Z

    URL, CA Association of Realtors,

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    RC 2 Water Use-2

    data.sustainablesm.org | Last Updated 2022-08-02T23:47:22.000Z

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    Census Data - Selected socioeconomic indicators in Chicago, 2008 – 2012

    data.cityofchicago.org | Last Updated 2014-09-12T20:56:56.000Z

    This dataset contains a selection of six socioeconomic indicators of public health significance and a “hardship index,” by Chicago community area, for the years 2008 – 2012. The indicators are the percent of occupied housing units with more than one person per room (i.e., crowded housing); the percent of households living below the federal poverty level; the percent of persons in the labor force over the age of 16 years that are unemployed; the percent of persons over the age of 25 years without a high school diploma; the percent of the population under 18 or over 64 years of age (i.e., dependency); and per capita income. Indicators for Chicago as a whole are provided in the final row of the table. See the full dataset description for more information at: https://data.cityofchicago.org/api/views/fwb8-6aw5/files/A5KBlegGR2nWI1jgP6pjJl32CTPwPbkl9KU3FxlZk-A?download=true&filename=P:\EPI\OEPHI\MATERIALS\REFERENCES\ECONOMIC_INDICATORS\Dataset_Description_socioeconomic_indicators_2012_FOR_PORTAL_ONLY.pdf

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    California Small Business Covid-19 Relief Grant Program - Richmond Data

    www.transparentrichmond.org | Last Updated 2021-05-18T22:31:11.000Z

    This dataset is publicly available on and was downloaded directly from CA GO-Biz at https://business.ca.gov/coronavirus-2019/. This data includes all California Small Business Covid-19 Relief Grant Program awardees as of 5-13-2021 that applied in Contra Costa County with the Business City as Richmond, Point Richmond, or Hilltop and various spellings of the three aforementioned names. This data has been cleaned to change the "Business City" for businesses who applied with "Point Richmond" or "Hilltop" or various misspellings to "Richmond".

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    Car Share Totals

    data.cityofberkeley.info | Last Updated 2015-01-22T19:23:19.000Z

    Total number of car share vehicles and pods in Berkeley

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    Food Resources in California

    controllerdata.lacity.org | Last Updated 2020-08-10T22:26:11.000Z

    This dataset contains a list of resources such food pantries, food banks, and other food distribution sites throughout the state of California. The data is current as of May 1, 2020. Due to the coronavirus pandemic, many food pantries may change their hours or close temporarily. Please contact a food pantry prior to visiting them to confirm their operating hours and ensure you are in their service area.

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    LADWP Water Supply in Acre Feet

    data.lacity.org | Last Updated 2020-11-30T17:05:18.000Z

    Sources of LADWP Water Supply in Acre Feet. MWD - Metropolitan Water District, LA Aqueduct, Local Groundwater, and Recycled Water.