Boulder County, Colorado Online Historical Directories

Expand your research by checking out the Colorado Online Historical Newspapers here.
 

Links to directories at Ancestry are to the images themselves, which are browsable. Non-subscribers will not be able to view these. Non-subscribers can, however, use the search engine and see a listing of possible results (but no images or further details). To search by name, directory, year, or keyword, go to Ancestry's U.S. City Directories search engine. For more information on how to access subscription websites, read Number 5 on my FAQs page.

Rocky Mountain Area Business and City Directories, Wallihan, 1871 - Free (Don's List)
- includes Black Hawk (page 335), Boulder (387), Burlington (394), Central City (343), Colorado City (413), Denver (261), Georgetown (375), Golden (319), Greeley (390), Idaho Springs (367), Kit Carson (411), Nevadaville (361), Pueblo (404), Trinidad (399), and more

Boulder City Directory, Polk, 1936 - $ (Ancestry)
 - listed incorrectly as Boulder County Directory

Longmont City and Boulder County Directory, Polk, 1936 - $ (Ancestry)
 - includes Allen's Park, Broomfield, Cardinal, Caribou, Crisman, Eldora, Eldorado Springs, Gold Hill, Gorham, Hygiene, Jamestown, Lafayette, Louisville, Lyons, Nederland, Niwot, Peaceful Valley, Salina, Sugar Loaf, Sunset, Superior, Tungsten, Wall Street, and Ward

Boulder City Directory, Polk, 1938
- $ (Ancestry)

Longmont City Directory, Polk, 1938 - $ (Ancestry)
 - includes Buyer's Guide and Business Directory for Boulder City

Boulder County Directory, Polk, 1940 - $ (Ancestry)
 - Part I (through page 271; includes Boulder and Longmont)
 - Part II (pages 376 to 474, and end pages of directory; includes Allen's Park, Broomfield, Cardinal, Caribou, Crisman, Eldora, Eldorado Springs, Gold Hill, Gorham, Hawthorne, Hygiene, Jamestown, Lafayette, Louisville, Lyons, Nederland, Niwot, Peaceful Valley, Salina, Sugar Loaf, Sunset, Superior, Tungsten, Wall Street, and Ward); also includes through page 13 of the 1943 county directory)

Longmont City Directory, Polk, 1940 - $ (Ancestry)
 - page 271 to 375 of Boulder County Directory, above

Boulder County Directory, Polk, 1943 - $ (Ancestry)
 - one link (pages 14 to 248) includes Boulder City Directory and the county rural routes directory (begins at page 237); images are of two pages each
 - another link (page 355 to 458, and end pages) appears to be the county directory and advertisements; images are of single pages
 - last link (title page to 248) - another copy of the first link, but images are of single pages

Longmont City Directory, Polk, 1943 - $ (Ancestry)
 - page 255 to 353 of Boulder County Directory, above

Boulder City Directory, Polk, 1946 - $ (Ancestry)
 - includes Lafayette, Longmonth and Louisville, and Boulder County

Boulder City Directory, Polk, 1949 - $ (Ancestry)
 - includes Lafayette, Longmonth and Louisville, and Boulder County

Boulder City Directory, Polk, 1951 - $ (Ancestry)
 - includes Lafayette, Longmonth and Louisville, and Boulder County





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