The land area of Columbia, MD was 32 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:

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Geographic and Area Datasets Involving Columbia, MD

  • API

    Tax Sales: 2010 - Current

    opendata.howardcountymd.gov | Last Updated 2018-05-03T20:39:24.000Z

    The County holds an annual Tax Sale in May or June of each year. Tax lien certificates for properties with delinquent taxes, water and sewer bills or other liens will be auctioned to the highest bidder. On or about March 1, the County will send a delinquent notice to all property owners with delinquent bills and advertise the delinquent properties in the Howard County Times / Columbia Flier for at least four weeks prior to the sale.

  • API

    Homeland Security Grant Awards 2003 - 2014

    opendata.maryland.gov | Last Updated 2020-01-24T19:19:02.000Z

    This data set shows four sources of grant funding for the Governor's Office of Homeland Security (GOHS) and respective awards from 2003 to 2014.

  • API

    Surface Water Quality Assessments

    opendata.maryland.gov | 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 http://www.mde.state.md.us/PROGRAMS/WATER/TMDL/INTEGRATED303DREPORTS/Pages/Programs/WaterPrograms/TMDL/Maryland%20303%20dlist/index.aspx A searchable version of this data is available at http://www.mde.state.md.us/programs/Water/TMDL/Integrated303dReports/Pages/303d.aspx

  • API

    MD COVID-19 - Total Vaccinations Statewide

    opendata.maryland.gov | Last Updated 2022-05-20T16:11:46.000Z

    <b>Summary</b> The cumulative number of COVID-19 vaccinations in Maryland: First dose, second dose, single dose, total vaccinations. <b>Description</b> The MD COVID-19 - Total Vaccinations Statewide data layer is a collection of the statewide COVID-19 vaccinations that have been reported each day into ImmuNet. Doses administered also account for doses of vaccine provided to the District of Columbia to vaccinate Maryland residents who work in DC. <b>Terms of Use</b> The Spatial Data, and the information therein, (collectively the "Data") is provided "as is" without warranty of any kind, either expressed, implied, or statutory. The user assumes the entire risk as to quality and performance of the Data. No guarantee of accuracy is granted, nor is any responsibility for reliance thereon assumed. In no event shall the State of Maryland be liable for direct, indirect, incidental, consequential or special damages of any kind. The State of Maryland does not accept liability for any damages or misrepresentation caused by inaccuracies in the Data or as a result to changes to the Data, nor is there responsibility assumed to maintain the Data in any manner or form. The Data can be freely distributed as long as the metadata entry is not modified or deleted. Any data derived from the Data must acknowledge the State of Maryland in the metadata.

  • API

    Floodplain Study

    data.montgomerycountymd.gov | Last Updated 2022-03-16T09:45:29.000Z

    The purpose of a floodplain study is to establish the 100-year floodplain limits within or near a development in order to preserve the natural resources within the 100-year floodplain, to protect property and persons, and to apply a unified, comprehensive approach to floodplain management. Update Frequency - Daily

  • API

    Crash Reporting - Incidents Data

    data.montgomerycountymd.gov | Last Updated 2022-05-20T05:41:45.000Z

    This dataset provides general information about each collision and details of all traffic collisions occurring on county and local roadways within Montgomery County, as collected via the Automated Crash Reporting System (ACRS) of the Maryland State Police, and reported by the Montgomery County Police, Gaithersburg Police, Rockville Police, or the Maryland-National Capital Park Police. Please note that these collision reports are based on preliminary information supplied to the Police Department by the reporting parties. Therefore, the collision data available on this web page may reflect: -Information not yet verified by further investigation -Information that may include verified and unverified collision data -Preliminary collision classifications may be changed at a later date based upon further investigation -Information may include mechanical or human error This dataset can be joined with the other 2 Crash Reporting datasets (see URLs below) by the State Report Number. * Crash Reporting - Drivers Data at https://data.montgomerycountymd.gov/Public-Safety/Crash-Reporting-Drivers-Data/mmzv-x632 * Crash Reporting - Non-Motorists Data at https://data.montgomerycountymd.gov/Public-Safety/Crash-Reporting-Non-Motorists-Data/n7fk-dce5 Update Frequency : Weekly

  • API

    Floodplain District Permit

    data.montgomerycountymd.gov | Last Updated 2022-05-16T09:53:42.000Z

    The purpose of a Floodplain District Permit (FPDP) is to control floodplain development in order to protect persons and property from danger and destruction and to preserve environmental quality. Floodplain district: Any area specified in Executive regulations that is subject to inundation in a 100-year storm. This includes any waterway with a drainage area of 30 acres or larger. Floodplain district permit: A permit issued by the Department under this article authorizing land-disturbing and construction activities. Floodplain district permit plan: A set of representational drawings or other documents submitted by an applicant to obtain a floodplain district permit that contains the information and specifications the Department requires minimizing the safety hazards of or the negative hydraulic and environmental impacts associated with development in or near a floodplain." Update Frequency : Daily

  • API

    MC311 Service Requests

    data.montgomerycountymd.gov | Last Updated 2022-05-22T05:17:26.000Z

    Information on all MC311 Service Requests received (via email or phone) since July 1, 2012. This data is updated daily. The PIO’s business requirement includes adding the following data elements to the new and enhanced open data site being proposed by DTS. This data is derived from requests for service which originate in the CSC, from the County’s web portal, and via “walk-ins” from county departments including but not limited to DHCA. • SLA – to indicate the number of days in county business days the department has to fulfill the request. County business days must exclude weekends, county holidays and days when the county is closed due to inclement weather (snow days, etc) per CountyStat’s business requirement. This field has been published in the existing MC311 Service Requests dataset with the field name ‘Attached Solution SLA Days’. • +/- SLA –to indicate the number of days a service request is over or under SLA as is currently measured by CountyStat. The following 4 fields will be added to fulfill this line item  # of days open – Number of County Business days the Service Request has been opened.  Within SLA Window? - To indicate the number of days a service request is over or under SLA as is currently measured by CountyStat.  SLA Yes – Number of days to fulfill the service request is under the SLA window.  SLA No -– Number of days to fulfill the service request is over the SLA window.

  • API

    DC Water SSO

    dcwater-opendata.socrata.com | Last Updated 2019-12-01T20:04:31.000Z

    Sanitary Sewer Overflows: This dataset is host to DC Water’s information about Sanitary Sewer Overflows (SSO) for the past five years. The dataset is updated on a weekly basis. The information provided is limited to the best available data in DC Water’s possession at the time the dataset was loaded. More Information on SSO’s An SSO occurs when diluted untreated wastewater spills or overflows, and can be caused by excessive rainfall. With nearly 1,800 miles of sewer lines throughout its service area, DC Water appreciates notification from the public if a sewer backup is suspected. Please call the 24-hour Emergency Command Center at 202-612-3400 at any time to report water or sewer emergencies in the District of Columbia. DC Water is committed to protecting the health of the public and the environment. The Clean Rivers Project is a $2.6 billion long-term project to add capacity to the combined sewer system and reduce combined sewer overflows. In addition, the project’s enormous storage tunnels may also alleviate some SSOs. For more information please visit https://www.dcwater.com/sanitary-sewer Data Disclaimer: District of Columbia Water and Sewer Authority (“D.C. Water”) provides data available on this website as a service to the public. The data provided by D.C. Water is based on historical data, information directly provided by DC Water, information directly provided by DC Water contractors and in some cases, information acquired during physical inspections. DC Water does not guarantee the accuracy of this data and assumes no liability for any errors. The data shall be used for the sole purpose of providing the public with information regarding this program and not for any commercial, legal or other use. D.C. Water assumes no liability for any decisions made or action taken or not taken by anyone using data provided from this website. D.C. Water reserves the right to alter, amend or terminate at any time the display of this data.

  • API

    MD COVID-19 Total Doses Distributed Statewide

    opendata.maryland.gov | Last Updated 2022-04-29T16:10:44.000Z

    <b>WARNING:</b> This asset has been deprecated and will no longer be updated. <b>Summary</b> The cumulative number of COVID-19 vaccines distributed in Maryland. <b>Description</b> The MD COVID-19 - Total Doses Distributed Statewide data layer is a collection of the statewide COVID-19 vaccines that have been reported into VTrckS. Doses distributed also account for doses of vaccine provided to the District of Columbia to vaccinate Maryland residents who work in DC. <b>Terms of Use</b> The Spatial Data, and the information therein, (collectively the "Data") is provided "as is" without warranty of any kind, either expressed, implied, or statutory. The user assumes the entire risk as to quality and performance of the Data. No guarantee of accuracy is granted, nor is any responsibility for reliance thereon assumed. In no event shall the State of Maryland be liable for direct, indirect, incidental, consequential or special damages of any kind. The State of Maryland does not accept liability for any damages or misrepresentation caused by inaccuracies in the Data or as a result to changes to the Data, nor is there responsibility assumed to maintain the Data in any manner or form. The Data can be freely distributed as long as the metadata entry is not modified or deleted. Any data derived from the Data must acknowledge the State of Maryland in the metadata.