The population density of St. Mary's County, MD was 312 in 2018. The population density of Alexandria city, VA was 10,415 in 2018.

Population Density

Population Density is computed by dividing the total population by Land Area Per Square Mile.

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

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Geographic and Population Datasets Involving St. Mary's County, MD or Alexandria city, VA

  • API

    Maryland Resident Population Per Square Mile: 2010-2020

    opendata.maryland.gov | Last Updated 2022-04-08T18:59:46.000Z

    Resident population density for Maryland and Jurisdictions per square mile from 2010 to 2020. Source: U.S. Bureau of Census

  • API

    MDOT/MVA Electric and Plug-in Hybrid Vehicle Registrations by County as of each month end from July 2020 to July 2022

    opendata.maryland.gov | Last Updated 2022-08-03T18:27:22.000Z

    Total number of electric and plug-in hybrid vehicles with active MD registrations by county as of each month end from July 2020 to July 2022

  • API

    MD COVID-19 - Cases by County

    opendata.maryland.gov | Last Updated 2022-09-23T14:59:22.000Z

    <b>Summary</b> The cumulative number of positive COVID-19 cases among Maryland residents within a single Maryland jurisdiction. <b>Description</b> The MD COVID-19 - Cases by County data layer is a collection of positive COVID-19 test results that have been reported each day by the local health department via the ESSENCE system. <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

    Maryland Total Change in Resident Population: 2010-2020

    opendata.maryland.gov | Last Updated 2021-11-01T22:01:16.000Z

    Total Change in Resident Population in Maryland and its Jurisdictions by year from 2010 to 2020

  • API

    MD COVID-19 - Vaccinations by County

    opendata.maryland.gov | Last Updated 2022-09-23T16:10:47.000Z

    <b>Summary</b> The cumulative number of COVID-19 vaccinations within a single Maryland jurisdiction. <b>Description</b> The MD COVID-19 - Vaccinations by County data layer is a collection of COVID-19 vaccinations that have been reported each day into ImmuNet. <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

    Maryland Domestic Migration: 2001-2020

    opendata.maryland.gov | Last Updated 2021-11-01T19:38:30.000Z

    Domestic Migration in Maryland and its Jurisdictions from 2001 to 2020. Domestic migration will also include the net change in group quarters population, source: Population Division, U.S. Census bureau, March 2021.

  • API

    Population Estimates 2010-2020

    opendata.maryland.gov | Last Updated 2021-11-01T21:59:41.000Z

    Maryland Total Resident Population from 2010 - 2020 based on US Census Data

  • API

    Maryland Total Migration: 2000-2020

    opendata.maryland.gov | Last Updated 2021-11-01T18:17:38.000Z

    Maryland Total (International and Domestic) Migration from 2000 to 2020. Source from the Population Division, U.S. Census Bureau.

  • API

    Maryland International Migration: 2001-2020

    opendata.maryland.gov | Last Updated 2021-11-01T19:13:28.000Z

    Maryland International Migration from 2001 to 2020, which includes net foreign-born international migration, net movement to/ from Puerto Rico, net Armed Forces movement and native emigration. Source from the Population Division, U.S. Census Bureau, March 2020.

  • API

    Prevalence and Mean of Dental Caries (Cavities) among Maryland School Children, 2005-2006

    opendata.maryland.gov | Last Updated 2018-04-06T13:25:19.000Z

    This is the weighted prevalence of 1,276 schoolchildren. 1,276 out of 1,280 cases examined had prevalence available. One out of 1,276 cases had grade information missed, 564 were in Kindergarten and 711 in 3rd grade. Prevalence is defined as occurrence of any caries among all selected population. Mean is the average number of teeth with caries among students with caries in the selected population. Region Identifiers and Constituent Counties: Western (Allegany, Frederick, Garrett, Washington); Central D.C. (Howard, Montgomery, Prince George’s); Southern (Calvert, Charles, St. Mary’s); Central Baltimore (Anne Arundel, Baltimore City, Baltimore County, Carroll, Harford); Eastern Shore (Caroline, Cecil, Dorchester, Kent, Queen Anne’s, Somerset, Talbot, Wicomico, Worcester).