80933
According to the United States Census Bureau , Green Knoll had a total area of 4.710 square miles ( 12.199 km2 ) , of which , 4.707 square miles ( 12.191 km2 ) of it is land and 0.003 square miles ( 0.008 km2 ) of it ( 0.07 % ) is water .
 United States Census Bureau
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 United States Census Bureau