The land area of Ada County, ID was 1,053 in 2018.

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.

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Geographic and Area Datasets Involving Ada County, ID

  • API

    Metro Water Services - Service Outages | Last Updated 2022-01-16T02:35:09.000Z

    A listing of the location and status of current known water service outages within the Metro Water Services coverage area.

  • API

    DNR-WPP-Chronic Violators | Last Updated 2022-01-13T19:52:39.000Z

    Listing of Chronic Violators for DNR

  • API

    Alameda County Shelters (Emergencies) | Last Updated 2014-04-10T00:48:41.000Z

    In the event of a disaster, where large numbers of residents are displaced, the Social Services Agency is charged with providing workers for mass shelters in the unincorporated areas of Alameda County. The data contained in the data set includes locations of potential shelter locations, with information on location, facility, and who to contact. In the event of a disaster, shelter locations must be inspected for structural integrity and cleared for public use. In addition, if the shelter is a school site, all students must be released before it can be opened for public shelter use.

  • API

    Beach and Creek Monitoring Results | Last Updated 2022-01-15T02:00:24.000Z

    Water samples from natural recreational waters in San Mateo County are sampled each week for concentrations of indicator bacteria including E. Coli, Enterococcus, and Coliform bacteria. If concentrations of indicator bacteria exceed State or County standards, the area is posted to warn users that they may become ill if they engage in water contact activities in the posted area. More information about results and testing can be found on the San Mateo County Health System site: This dataset contains readings from January, 2012 to the present and is updated weekly.

  • API

    Water Levels and Flows | Last Updated 2022-01-17T08:25:31.000Z

    A combining of data from 23 Water Level and Flow monitoring stations from water areas in Alberta that directly influence the Water Level and Flow of the North Saskatchewan River. A combination of data from 3 Water Level and Flow monitoring stations from water areas in Albert that directly influence the Water Level and Flow of the Sturgeon River. This data is sourced from the Government of Alberta website and as such the Government of Alberta's disclaimer covers this data. Government of Alberta Disclaimer: Data provided through this web app is provisional and preliminary in nature. Data is automatically generated by remote equipment that may not be under control of the Government of Alberta. This data has not been reviewed or edited for accuracy and may be subject to significant change when reviewed or corrected. Please exercise caution and carefully consider the provisional nature of the information provided. The Government of Alberta assumes no responsibility for the accuracy or completeness of this data and any use of it is therefore, entirely at your own risk. Additional Government of Alberta "Provisional Data Disclaimer": Alberta Environment routinely collects real-time hydrometeorological data from meteorological and stream gauges using telephone and communications satellites to support its water resources management activities. These gauges are owned and operated by different organizations and partners outside the Alberta Government. Near Real-Time data provided at this site are provisional and preliminary in nature. They are automatically generated by remote equipment that may not be under Alberta Government control and have not been reviewed or edited for accuracy. These data may be subject to significant change when manually reviewed and corrected. The accuracy of the data can be affected by many factors including: - malfunction of recording equipment - algal and aquatic growth in the stream which affects the stage-discharge relationship - backwater from ice or debris such as log jams - changes to the stream bed geometry Please exercise caution and carefully consider the provisional nature of the information provided. The Government of Alberta assumes no responsibility for the accuracy or completeness of these data and any use of them is entirely at your own risk. “

  • API

    WAOFM - Census - Population and Housing, 2000 and 2010 | Last Updated 2021-09-01T17:20:31.000Z

    Population and housing information extracted from decennial census Public Law 94-171 redistricting summary files for Washington state for years 2000 and 2010.

  • API

    Surface Water Quality Assessments | Last Updated 2018-08-13T20:15:11.000Z

    This is the 2014 Integrated Report. EPA approved this submission in accordance with Sections 303(d), 305(b), and 314(l) of the Clean Water Act, on October 16, 2015. The Integrated Report (IR) combines two water quality reports required under sections 305(b) and 303(d) of the federal Clean Water Act. Section 305(b) requires states, territories and authorized tribes to perform annual water quality assessments to determine the status of jurisdictional waters. Section 303(d) requires states, territories and authorized tribes to identify waters assessed as not meeting water quality standards(see Code of Maryland Regulations 26.08.02). Waters that do not meet standards may require a Total Maximum Daily Load to determine the maximum amount of an impairing substance or pollutant that a particular water body can assimilate and still meet water quality criteria. Historically, the 303(d) List and the 305(b) report were submitted to the Environmental Protection Agency (EPA) as separate documents but more recent guidance has called for combining these two reports into a single biennial publication. More information is available at A searchable version of this data is available at

  • API

    Water Quality | Last Updated 2022-01-14T01:14:05.000Z

    This dataset contains water quality samples collected from Puget Sound, lakes, and streams in the region which can be filtered by "Site Type" and "Area". To see where water quality samples are collected, see the <a href="">WLRD Water Quality Collection Sites</a> dataset.

  • API


    This dataset contains Environmental Health Violations for Restaurants and Markets in Los Angeles County. Los Angeles County Environmental Health is responsible for checking food violations for all unincorporated areas and 85 of the 88 cities in the County. This dataset does not include Pasadena, Long Beach or Vernon (each has its own city health department). Each row represents one health code violation. All rows with the same Activity Date, Record ID, and Serial Number are part of the same violation. The Serial Number is the primary key to review the inspection grade (Inspection Result dataset)

  • API

    Fare Card History for Metropolitan Transportation Authority (MTA): Beginning 2010 | Last Updated 2021-08-16T17:54:52.000Z

    These files show the number of MetroCard swipes made each week by customers entering each station of the New York City Subway, PATH, AirTrain JFK and the Roosevelt Island Tram, broken out to show the relative popularity of the various types of MetroCards. MTA New York City Transit posts the latest data every Saturday by 1 a.m., and the dates listed in the links reference the date the data is posted. The data in the files covers seven-day periods beginning on the Saturday two weeks prior to the posting date and ending on the following Friday.