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The population count of Montgomery County, MD was 1,040,133 in 2018.

Population

Population Change

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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Demographics and Population Datasets Involving Montgomery County, MD

  • API

    Choose Maryland: Compare Counties - Demographics

    opendata.maryland.gov | Last Updated 2019-12-13T12:53:02.000Z

    Population profile - total, rate of change, age, and density.

  • 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

    Population Health Measures: Age-Adjusted Mortality Rates

    data.montgomerycountymd.gov | Last Updated 2023-04-03T23:57:01.000Z

    Age-adjustment mortality rates are rates of deaths that are computed using a statistical method to create a metric based on the true death rate so that it can be compared over time for a single population (i.e. comparing 2006-2008 to 2010-2012), as well as enable comparisons across different populations with possibly different age distributions in their populations (i.e. comparing Hispanic residents to Asian residents). Age adjustment methods applied to Montgomery County rates are consistent with US Centers for Disease Control and Prevention (CDC), National Center for Health Statistics (NCHS) as well as Maryland Department of Health and Mental Hygiene’s Vital Statistics Administration (DHMH VSA). PHS Planning and Epidemiology receives an annual data file of Montgomery County resident deaths registered with Maryland Department of Health and Mental Hygiene’s Vital Statistics Administration (DHMH VSA). Using SAS analytic software, MCDHHS standardizes, aggregates, and calculates age-adjusted rates for each of the leading causes of death category consistent with state and national methods and by subgroups based on age, gender, race, and ethnicity combinations. Data are released in compliance with Data Use Agreements between DHMH VSA and MCDHHS. This dataset will be updated Annually.

  • API

    Maryland Total Change in Resident Population: 2020-2021

    opendata.maryland.gov | Last Updated 2022-10-12T19:33:39.000Z

    Total Change in Resident Population in Maryland and its Jurisdictions by year from July 1, 2020 to July 1, 2021.

  • API

    Maryland Median Household Income By Year With Margin Of Error: 2010-2020

    opendata.maryland.gov | Last Updated 2022-10-07T20:48:17.000Z

    The data consist of the median household income by the year in Maryland and the margin of error of the median income from 2010-2020. MOE= Margin of Error for the 90% confidence interval. Source from the U.S. Census Bureau, Small Area Income and Poverty Estimates, May 2021.

  • API

    MD COVID-19 - Confirmed Deaths by County

    opendata.maryland.gov | Last Updated 2023-09-26T14:46:29.000Z

    <b>Note:</b> Starting April 27, 2023 updates change from daily to weekly. <b>Summary</b> The cumulative number of confirmed COVID-19 deaths among Maryland residents within a single Maryland jurisdiction. <b>Description</b> The MD COVID-19 - Confirmed Deaths by County data layer is a collection of the statewide confirmed COVID-19 related deaths that have been reported each day by the Vital Statistics Administration that have occurred in each Maryland jurisdiction. A death is classified as confirmed if the person had a laboratory-confirmed positive COVID-19 test result. Some data on deaths may be unavailable due to the time lag between the death, typically reported by a hospital or other facility, and the submission of the complete death certificate. This data layer does not include probable deaths. Probable deaths are available from the MD COVID-19 - Probable Deaths by County data layer. <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

    Population Estimates 2010-2021

    opendata.maryland.gov | Last Updated 2022-11-08T00:19:24.000Z

    Maryland Total Resident Population from 2010 - 2021 based on US Census Data

  • API

    Maryland Counties Socioeconomic Characteristics (2016-2020 from ACS)

    opendata.maryland.gov | Last Updated 2023-09-19T16:13:41.000Z

    Data for population, gender, race, labor force, educational attainment, income, poverty, households and housing units from the American Community Survey.

  • API

    Correctional Facility Average Daily Population

    data.montgomerycountymd.gov | Last Updated 2023-09-08T10:30:53.000Z

    This dataset contains Accumulated monthly with details from Pre-Trial Average daily caseload * Detention Services, Average daily population for MCCF, MCDC, PRRS and Pre-Release average daily population for the last 3 calendar years. Update Frequency : Monthly

  • API

    MCG Turnover Percentage Rate

    data.montgomerycountymd.gov | Last Updated 2023-04-04T00:01:31.000Z

    The Montgomery County Government has a diverse workforce of employees that cross five generations and multiple age, race, gender and ethnic groups. The dataset is a summary of the County's turnover percentage by generational category, age, race, ethnicity, gender and job class. (Turnover percentage is calculated using only full time-regular and part time-regular employees. Full time-temporary and part time-temporary employees are excluded for turnover calculation). Data covers 1/1 to 12/31 of the previous calendar year. (Other = Employees who identify as American Indian/Alaskan Native or Native Hawaiian/Pacific Islander) Update Frequency : Annually