District of Columbia

The American Community Survey (ACS) is an ongoing survey that provides data every year -- giving communities the current information they need to plan investments and services. The ACS covers a broad range of topics about social, economic, demographic, and housing characteristics of the U.S. population. The 5-year estimates from the ACS are "period" estimates that represent data collected over a period of time. The primary advantage of using multiyear estimates is the increased statistical reliability of the data for less populated areas and small population subgroups.    

US : NAICS Sectors, Small Employment Sizes An enterprise is a business organisation consisting of one or more domestic establishments that were specified under common ownership or control. The enterprise and the establishment are the same for single-establishment firms. Each multi-establishment company forms one enterprise - the enterprise employment and annual payroll are summed from the associated establishments.

City and Town Population Totals: 2010-2022, U.S.

Year represents, for any particular company, the time series of that particular company. For example xyz company has data for 10 years (2007-2016) then in "year" it shows 10, if another company ABC has time series of 5 years (2007-2011) then it shows 5.   Note: Before 2007, data is not available but it has been counted under "Year".

The dataset contains selected income and tax items classified by State, ZIP Code, and size of adjusted gross income. The data are based on individual income tax returns filed with the IRS. The dataset includes following items:Number of Returns, which approximates the number of HouseholdsNumber of Personal Exemptions, which approximates the PopulationAdjusted Gross Income Wages and SalariesDividends Before ExclusionInterest Received 

Data cited at: (https://www.numbeo.com/cost-of-living/historical-prices-by-city?displayCurrency=USD&year=2016&itemId=13)

Public transit is a critical part of the economic and social fabric of metropolitan areas. Nearly 30 million trips are made every day using public transit. Almost all of these trips occur in the nation’s 100 largest metro areas, which account for over 95 percent of all transit passenger miles traveled. People take transit for any number of reasons, but one of the most common is to get to work.

Number of schools, students, and teachers in regular schools with membership for the 100 largest cities in the United States Note: Cities listed by 2010-11 student membership size, descending. City name is based on specific location of school and United States Post Office assigned city designations. Membership is the count of students enrolled on October 1 of the reported school year. Analysis includes only regular schools with membership greater than zero. Data include all 50 states and the District of Columbia. Operating schools include all those providing services during the reported school year. New schools are schools opened for the first time within the school year reported. Continuing operations schools include schools that provided services in the prior school year. Counts of students and teachers for closed schools are for the prior school year. For example, counts of students for schools closed in school year 2000–01 are based on enrollments for these schools in school year 1999–2000. Membership is the count of students enrolled on October 1 of the reported school year. Analysis includes only regular schools with membership greater than zero. Data include all 50 states and the District of Columbia. Worcester, MA, New Haven–Milford, CT, and Springfield, MA Metro Areas became metropolitan statistical areas in 2006–07. North Port–Bradenton–Sarasota, FL Metro Area became a metropolitan statistical area in 2010–11. Data for prior years are not available. Source: U.S. Department of Education, National Center for Education Statistics, Common Core of Data (CCD), "Public Elementary/Secondary School Universe Survey," 2001–02, Version 1a; 2002–03, Version 1a; 2003–04, Version 1a; 2004–05, Version 1b; 2005–06, Version 1a; 2006–07, Version 1c; 2007–08, Version 1b; 2008–09, Version 1b; 2009–10, Version Provisional 2a; and 2010–11, Version Provisional 2a.

Note:  The dataset is combination of two following datasets. https://www2.census.gov/programs-surveys/popest/tables/2020-2021/state/detail/https://knoema.com/USRAGE2013/ https://www2.census.gov/programs-surveys/popest/tables/2020-2021/state/detail/https://knoema.com/USRSD2013/