This information is pulled together for easy access in Census Alaska: Number of Inhabitants, 1792-1970, compiled by Alden Rollins in 1978.Assuming that the height of the gold rush in Juneau was about 1915, I’ve provided figures from the 1910 and 1920 censuses.1910

• State: 64,356 (this was the largest number between 1880 and 1930) 
• First Judicial District (Southeast Alaska): 15,216 
• Juneau District: 5,854 
• Auke village: 218 
• Douglas town (incorporated): 1,722 
• Juneau town (incorporated): 1,644 
• Killisnoo village: 351 
• Treadwell town (incorporated): 1,222 

Juneau town was a little bigger in 1900 (1,864), but all of the other locations in the Juneau District were quite a bit smaller.1920

• State: 55,036 
• First Judicial District: 17,402 
• Juneau District: 5,893 This was broken out a little differently, and may possibly include more area, as I didn’t notice Angoon or Thane on the 1910 census. 
• Angoon village: 114 
• Auke village: not listed 
• Douglas town: 919 
• Juneau town: 3,058 
• Killisnoo village: 256 
• Treadwell village: 325 
• Thane village: 421 

Although the source book cannot be checked out, feel free to contact us for a lookup if you're interested in a different date or area of Alaska.