Hi List, This is guaranteed NOT to be scientific or accurate. But hopefully it will be fun and give some sense of the county. I've got the subscription to census records at Ancestry.com . Some are indexed (1st warning sign). And some allow you to search by "keyword" or "birthplace". I'm not quite sure who comes up on searches - everyone in the family or only heads of household (2nd warning). I believe it varies by census. The following is from the index for the 1920 Federal and I believe only lists heads of household. I picked index for state-Colorado, county-Boulder, left "name" blank and filled in "birthplace". I did not try every country or state but believe I have a fair sampling. Those born in : Canada 153 Mexico 114 England 335 Wales 78 Scotland 68 Ireland 71 Norway 52 Sweden 273 Finland 14 Denmark 66 France 75 Germany 181 Spain 6 Portugal 0 Russia 136 Poland 33 Austria 117 Hungary 6 Slovakia 12 Italy 242 Greece 78 None from Turkey, Egypt, Libya, Morocco, Nigeria, Congo or from Brazil or Argentina. India 3 Australia 3 China 2 Japan 21 Colorado 1644 Nebraska 329 New Mexico 36 Arizona 0 Utah 12 Wyoming 24 Kansas 450 Texas 72 California 15 Iowa 856 Pennsylvania 446 That's a pretty diverse population. David