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Integrated Public Use Microdata Series
IPUMS, originally the ''Integrated Public Use Microdata Series'', is the world's largest individual-level population database. IPUMS consists of microdata samples from United States ''(IPUMS-USA)'' and international ''(IPUMS-International)'' census records, as well as data from U.S. and international surveys. The records are converted into a consistent format and made available to researchers through a web-based data dissemination and analysis system. IPUMS is housed at the Institute for Social Research and Data Innovation (ISRDI), an interdisciplinary research center at the University of Minnesota, under the direction of Professor Steven Ruggles. Description IPUMS includes all persons enumerated in the United States Censuses from 1850 to 1950 (though, the 1890 census is missing because it was destroyed in a fire) and from the American Community Survey since 2000 and the Current Population Survey since 1962. IPUMS includes household-level data for United States Censuses from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdata (statistics)
In the study of survey and census data, microdata is information at the level of individual respondents. For instance, a national census might collect age, home address, educational level, employment status, and many other variables, recorded separately for every person who responds; this is microdata. Advantages Survey/census results are most commonly published as aggregates (e.g. a regional-level employment rate), both for privacy reasons and because of the large quantities of data involved; microdata for one census can easily contain millions of records, each with several dozen data items. However, summarizing results to an aggregate level results in information loss. For instance, if statistics for education and employment are aggregated separately, they cannot be used to explore a relationship between these two variables. Access to microdata allows researchers much more freedom to investigate such interactions and perform detailed analysis. Microdata from censuses is esp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Community Survey
The American Community Survey (ACS) is an annual demographics survey program conducted by the United States Census Bureau. It regularly gathers information previously contained only in the long form of the United States census, decennial census, including ancestry, US citizenship status, educational attainment, income, language proficiency, migration, Disability in the United States, disability, employment, and housing characteristics. No respondents personal information is released, and only used statistically in these data which are used by many Public sector, public-sector, Private sector, private-sector, and not-for-profit stakeholders to allocate funding, track shifting demographics, plan for emergencies, and learn about local communities. Sent to approximately 295,000 addresses monthly, or 3.5 million addresses annually, it is the largest household survey that the Census Bureau administers. The American Community Survey gathers information annually in the 50 U.S. state, U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Databases
In computing, a database is an organized collection of data or a type of data store based on the use of a database management system (DBMS), the software that interacts with end users, applications, and the database itself to capture and analyze the data. The DBMS additionally encompasses the core facilities provided to administer the database. The sum total of the database, the DBMS and the associated applications can be referred to as a database system. Often the term "database" is also used loosely to refer to any of the DBMS, the database system or an application associated with the database. Before digital storage and retrieval of data have become widespread, index cards were used for data storage in a wide range of applications and environments: in the home to record and store recipes, shopping lists, contact information and other organizational data; in business to record presentation notes, project research and notes, and contact information; in schools as flash card ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Historical Geographic Information System
The National Historical Geographic Information System (NHGIS) is a historical GIS project to create and freely disseminate a database incorporating all available aggregate United States Census, census information for the United States between United States Census, 1790, 1790 and United States Census, 2010, 2010. The project has created one of the largest collections in the world of statistical census information, much of which was not previously available to the research community because of legacy data formats and differences between metadata formats. The statistical and geographic data are disseminated free of charge through a sophisticated online data access system. In addition, NHGIS has created historical and contemporary cartographic boundary shapefiles compatible with every census, and over 50 million lines of metadata describing the collection. Historical U.S. state and county boundaries are available 1790–present, with smaller geographies available as the United State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Atlantic Population Project
The North Atlantic Population Project (NAPP) is a collaboration of historical demographers in Britain, Canada, Denmark, Germany, Iceland, Norway, and Sweden to produce a massive census microdata collection for the North Atlantic Region in the late-nineteenth century. The database includes complete individual-level census enumerations for each country, and provides information on over 110 million people. This large scale allows detailed analysis of small geographic areas and population subgroups. The NAPP database is designed to be compatible with the Integrated Public Use Microdata Series (IPUMS), and is disseminated through the IPUMS data-access system at the Minnesota Population Center, University of Minnesota. Major collaborators on the project include Lisa Dillon, University of Montreal; Chad Gaffield, University of Ottawa; Ólöf Garðarsdóttir, Statistics Iceland; Marianne Jarnes Erikstad, University of Tromsø; Jan Oldervall University of Bergen; Evan Roberts, Unive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1840 United States Census
The 1840 United States census was the sixth census of the United States. Conducted by U.S. marshals on June 1, 1840, it determined the resident population of the United States to be 17,069,453 – an increase of 32.7 percent over the 12,866,020 persons enumerated during the 1830 census. The total population included 2,487,355 slaves. In 1840, the center of population was about 260 miles (418 km) west of Washington, D.C., near Weston, Virginia (now in West Virginia). This was the first census in which: * A state recorded a population of over two million ( New York) * A city recorded a population of over 300,000 ( New York) * Multiple cities recorded populations of over 100,000 (New York, Baltimore, and New Orleans) This was the last census conducted by U.S. marshals, as starting in 1850 a temporary office would be set up for each census under the purview of the Department of the Interior. This was due to the Northern members of the Whig Party opposing the controversial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1790 United States Census
The 1790 United States census was the first United States census. It recorded the population of the whole United States as of Census Day, August 2, 1790, as mandated by Article 1, Section 2, of the Constitution and applicable laws. In the first census, the population of the United States was enumerated to be 3,929,214 inhabitants. Congress assigned responsibility for the 1790 census to the marshals of United States judicial districts under an act, which with minor modifications and extensions, governed census taking through the 1840 census. "The law required that every household be visited, that completed census schedules be posted in 'two of the most public places within ach jurisdiction there to remain for the inspection of all concerned...' and that 'the aggregate amount of each description of persons' for every district be transmitted to the president." The census was published in 1791. It was 56 pages and cost $44,377.28. Contemporary perception Both Secretary of State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Current Population Survey
The Current Population Survey (CPS) is a monthly survey of about 60,000 U.S. households conducted by the United States Census Bureau for the Bureau of Labor Statistics (BLS). The BLS uses the data to publish reports early each month called the Employment Situation. This report provides estimates of the unemployment rate and the numbers of employed and unemployed people in the United States based on the CPS. A readable Employment Situation Summary is provided monthly. Annual estimates include employment and unemployment in large metropolitan areas. Researchers can use some CPS microdata to investigate these or other topics. The survey asks about the employment status of each member of the household 15 years of age or older as of a particular calendar week. Based on responses to questions on work and job search activities, each person 16 years and over in a sample household is classified as employed, unemployed, or not in the labor force. The CPS began in 1940, and responsibilit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1890 United States Census
The 1890 United States census was taken beginning June 2, 1890. The census determined the resident population of the United States to be 62,979,766, an increase of 25.5 percent over the 50,189,209 persons enumerated during the 1880 United States census, 1880 census. The data reported that the distribution of the population had resulted in the disappearance of the American frontier. This was the first census in which a majority of states recorded populations of over one million and the first in which three cities, New York City, Chicago, and Philadelphia, recorded populations of over one million. The census also saw Chicago rise in rank to the nation's second-most populous city, a position it would hold until Los Angeles, the 57th-most populous city as of 1890, supplanted it in 1990. This was the first U.S. census to use machines to tabulate the collected data. Most of the 1890 census materials were destroyed on January 10, 1921, when the Commerce Department building caught fire, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1950 United States Census
The 1950 United States census, conducted by the Census Bureau, determined the resident population of the United States to be 151,325,798, an increase of 14.5 percent over the 131,669,275 persons enumerated during the 1940 census. This was the first census in which: * More than one state recorded a population of over 10 million * Every state and territory recorded a population of over 100,000 * All 100 largest cities recorded populations of over 100,000 On April 1, 2022, the National Archives and Records Administration released scanned census enumeration sheets to the general public, in accordance with the 72 year rule. It is most recent census to have full public availability. Census questions The 1950 census collected the following information from all respondents: * address * whether house is on a farm * name * relationship to head of household * race * sex * age * marital status * birthplace * if foreign born, whether naturalized * employment status * hours worked in w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1850 United States Census
The 1850 United States census was the seventh decennial United States Census Conducted by the Census Office, it determined the resident population of the United States to be 23,191,876—an increase of 35.9 percent over the 17,069,453 persons enumerated during the 1840 census. The total population included 3,204,313 enslaved people. Although the official date of the census date was June 1, 1850, completed census forms indicate that the surveys continued to be made throughout the rest of the year. This was the first census where there was an attempt to collect information about every member of every household; women and children were named. Slaves were included by gender and estimated age on Slave Schedules, listed by the name of the owner. Prior to 1850, census records had recorded only the name of the head of the household and broad statistical accounting of other household members (three children under age five, one woman between the age of 35 and 40, etc.). This was also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
