Census data from 1790 to 1960 has been made available by the University of Virginia, Geospatial and Statistical Data Center. Examine states and counties by year, browse topics across time, and generate data maps.
"The Northern Ohio Data and Information Service (NODIS) is part of the Maxine Goodman Levin College of Urban Affairs, Cleveland State University. NODIS is designated by the State of Ohio and the U.S. Bureau of the Census as the regional data center for northern Ohio. NODIS is a depository for U.S. Census information, which is made available to the university community, public administrators, civic organizations and the general public on a cost-recovery basis. NODIS is a leader in the use of information technology, particularly geographic information systems (GIS). NODIS provides data analysis, mapping and programming services, technical assistance, programming and training.
"NODIS is your online connection to demographic and economic data for Ohio, especially post-1990 data tables and area profiles. The majority of data, maps and reports are based on geographies in the Cleveland-Elyria-Mentor MSA (Cuyahoga, Geauga, Lake, Lorain, Medina, Portage and Summit counties). NODIS also makes available data for other areas in Ohio and the US as well. The information contained in this website originates from a number of sources, including the Bureau of the Census and the Ohio Department of Development." - from web site
"SEDAC’s mission is to develop and operate applications that support the integration of socioeconomic and earth science data and to serve as an "information gateway" between the earth sciences and social sciences." from website
This resource includes a data resource directory for environmental and demographic topics.
SimplyMap is a web-based mapping application that lets users quickly create professional-quality thematic maps and reports using powerful demographic, business, and marketing data. SimplyMap turns complex data into valuable information that is easily accessed through an innovative and user-friendly interface.
"Statistics Canada, a member of the Industry Portfolio, produces statistics that help Canadians better understand their country—its population, resources, economy, society and culture.
In Canada, providing statistics is a federal responsibility. As Canada’s central statistical agency, Statistics Canada is legislated to serve this function for the whole of Canada and each of the provinces.
Objective statistical information is vital to an open and democratic society. It provides a solid foundation for informed decisions by elected representatives, businesses, unions and non-profit organizations, as well as individual Canadians.
In addition to conducting a Census every five years, there are about 350 active surveys on virtually all aspects of Canadian life.
We at Statistics Canada are committed to protecting the confidentiality of all information entrusted to us and to ensuring that the information we deliver is timely and relevant to Canadians." from web site