Monthly Population Estimates by Universe, Age, Sex, 5 Races, and Hispanic Origin for the United States: April 1, 2010 to July 1, 2013 // File: 7/1/2013 National Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: June 2014 // Note: 'In combination' means in combination with one or more other races. The sum of the five race groups adds to more than the total population because individuals may report more than one race.

Monthly Population Estimates by Universe, Age, Sex, 6 Races, and Hispanic Origin for the United States: April 1, 2010 to July 1, 2013 // File: 7/1/2013 National Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: June 2014 // Note: The estimates are based on the 2010 Census and reflect changes to the April 1, 2010 population due to the Count Question Resolution program and geographic program revisions. Hispanic origin is considered an ethnicity, not a race. Hispanics may be of any race.

Annual Estimates of the Resident Population by Single Year of Age and Sex for Puerto Rico: April 1, 2010 to July 1, 2013 // File: 7/1/2013 Puerto Rico Commonwealth Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: June 2014 // Note: The estimates are based on the 2010 Census and reflect changes to the April 1, 2010 population due to the Count Question Resolution program and geographic program revisions.

Annual Estimates of the Resident Population by Five-Year Age Groups and Sex for the Municipios of Puerto Rico: April 1, 2010 to July 1, 2013 // File: 7/1/2013 Puerto Rico Municipio Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: June 2014 // Note: The estimates are based on the 2010 Census and reflect changes to the April 1, 2010 population due to the Count Question Resolution program and geographic program revisions.

Annual State Resident Population Estimates for 5 Race Groups (5 Race Alone or in Combination Groups) by Age, Sex, and Hispanic Origin: April 1, 2010 to July 1, 2013// File: 7/1/2013 State Characteristics Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: June 2014 // Note: 'In combination' means in combination with one or more other races. The sum of the five race groups adds to more than the total population because individuals may report more than one race.

Annual State Resident Population Estimates for 6 Race Groups (5 Race Alone Groups and Two or More Races) by Age, Sex, and Hispanic Origin: April 1, 2010 to July 1, 2013 // File: 7/1/2013 State Characteristics Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: June 2014 // Note: The estimates are based on the 2010 Census and reflect changes to the April 1, 2010 population due to the Count Question Resolution program and geographic program revisions. Hispanic origin is considered an ethnicity, not a race. Hispanics may be of any race.

The American Community Survey (ACS) is a nationwide survey designed to provide communities a fresh look at how they are changing. The ACS replaced the decennial census long form in 2010 and thereafter by collecting long form type information throughout the decade rather than only once every 10 years. Questionnaires are mailed to a sample of addresses to obtain information about households -- that is, about each person and the housing unit itself.

The survey covers all public school systems that provide elementary or secondary education (PK-12). The data include revenue by source (local property tax, monies from other school systems, private tuition and transportation payments, school lunch charges, direct state aid, and federal aid passed through the state government), expenditure by function and object (instruction, support service functions, salaries, and capital outlay), indebtedness, and cash and investments.

This interactive database, maintained by the NIST Atomic Spectroscopy Data Center, contains more than 6000 references, dating from 1889 through current year and is updated regularly in intervals between one and four weeks. These references pertain to publications that include numerical data, general information, comments, and reviews on atomic line broadening and shifts.

This interactive database, maintained by the NIST Atomic Spectroscopy Data Center, contains more than 8000 references, dating from 1914 through current year and is updated regularly in intervals between one and four weeks. These references pertain to publications that include numerical data, comments, and reviews on atomic transition probabilities, oscillator strengths, line strengths, and radiative lifetimes.