This research guide to print and Internet resources lists major resources that provide demographic, social and economic statistics for northwestern California and the Klamath Bioregion. Listed are federal and California state statistical sources that provide data at least to the county level; and local reports that have been derived in many cases from federal and state sources. Key resources are noted with a pie chart () icon.
Source: CensusScope Charts and Trends
For historical census data see sources listed on Census Information.