official website or 1841 census?
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Looks like you must be looking for a British census.  Check the website below.
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go to family history.com
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ancestry.com is a good one
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http://www.bls.gov/oes/home.htm\n\nSorry, posted the wrong website the first time from my links pages
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familysearch.org - 1880 census, and all kinds of other fun stuff, including research guides, etc. \n\nheritage quest - this is often availble for home use with a public library card, given your local library subscribes. It has census information for many years but not for 1880 and 1930. \n\nTo name the best...
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http://www.immi.gov.au/
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Here ya go:\n\nhttp://www.isleworth.com/home.html
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ancestors?\n\nYou can do research online.  If you've got names of your parents/grandparents, dates of birth, places of birth, you can check census records or other historical documents.  They're all online.  Try your public library.
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www.jelleyjar.com/ancestor/chart.html \n\nJELLYJAR.COM  (LAST PART OF ADDRESS IS /CHART.HTML)\n\nFREE FORMS
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Map repository, or try the library of congress' website.
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The state government website
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goto the library and look up the census, or they may now have an online census
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The University of Virginia provides some excellent online tools for charting just this kind of information. Click on the 1850 census link then pick your parameters (include all states and groups in your case) and enter it.  Click on "Map It!" at the top of data columns to view the data in the form of an interactive map.\n\nhttp://fisher.lib.virginia.edu/collections/stats/histcensus/\n\nGood luck on your project,\nArmus\n\n** just in case it doesn't like the link I'll break it up into two parts and post them seperately\n\nhttp://fisher.lib.virginia.edu\n/collections/stats/histcensus/
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Try Wikipedia. I found the ethnicity of my last name from there.
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try the national geneological registry of the Mormon Church.  They keep the nationwide records.
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Well, Ancestry.com is an excellent site. You can get a free \n2 weeks. You can get a lot done in two weeks by looking up recent census records by name, which may tell you approximately or specifically where they live. And then play around from there for more information.
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http://www.burialdocumentsof1823.com