Do you know how many representatives your state has in the U.S. House of Representatives? Do you know how that number is determined or if it's ever changed? You're about to find out.

An article from the Utah Quarterly, Vol. 37, No. 1, by George Kraus, recounts the decision to use Chinese laborers in building the Central Pacific Railroad. Many original documents.

How the treemap started. Additional clicks will lead you to animated demonstrations of treemaps. Explore related treemap research and development.

Census population estimates for 2009 indicate that North Carolina continues to be one of the fastest-growing US states. Between the 2000 Census and July 1, 2009, the state's population grew by 16.5%, compared with the US growth rate of...

This site, which is provided for by WNET, gives a great way to practice using circle graphs through these exercises. One is analyzing a pie graph from the Census Bureau and the other creating pie charts using government data.

This page, part of the many pages offered by Boomer Headquarters, has many valuable statistics collected from the U.S. Department of Commerce, Bureau of the Census along with interesting explanations of the numbers.

The Field Guide to Local Amphibians was created by 4th graders in Shutesbury, Massachusetts. It was created as one aspect of a three-month Learning Expedition on amphibians. Students collected town data for a statewide amphibian census;...

This organization studies State and Local Government in California. It has some nice statistics on local government in California.

Discussion about the shift in demographic numbers that has been predicted: the end of the white majority in the United States and a majority of minorities.

Engaging discussion of the role Norwegians have played in the evolution of Seattle and King County. An interesting parallel is drawn between the geography and climate of Seattle with that of Norway, thus indicating why so many Norwegians...

A map from 1901 of the United States showing population density, railroad lines, state capitals, and census centers of population at the time. The red figures indicate the mean population density per square mile for each state according...

A map of the United States showing the increase in population per state between the 1900 and 1910 census. The map is keyed to show State population increases ranging from under 2 per cent to 50 per cent and over. "This is a map...

A map from 1900 of the United States showing the States where iron and steel manufacture is a principal industry. The map is keyed to show the mean annual production of manufactured goods given in dollars and the census of 1900.

A commercial map from 1872 of the United States showing the principal railroad and steamship routes in the region at the time. The map shows state boundaries and capitals, major cities and ports, submarine telegraph cables to Europe,...

A map of the central and eastern United States in 1840 showing the distribution of the population in the region at the time. The map shows State lines, the frontier line in 1840, and is keyed to show the areas of population density...

A map from 1919 showing the mean center of population of the United States, calculated at each census from 1790 to 1900. The map illustrates the westward expansion of territory and migration during the period. "The center of population...

The theoretical position of the mean center of population in the United States at the close of each census decade from 1790-1880.

General Sharpe, born in Kingston, N. Y., February 26th, 1828, was graduated at Rutgers in 1847; studied law at Yale College; was admitted to the bar in 1854, and practiced until he entered the army in 1861 as captain in the Twentieth New...

Review accurate and up to date statistics on the population of Hispanics in the United States. Click on the different states and find how Hispanics are becoming the number one minority in the United States.

Charts make it easy to read the yearly trade (both imports and exports) in U.S. dollars wtih Italy.