 As of the 2000 Census , there were 49 @,@ 321 people , 19 @,@ 677 households , and 11 @,@ 058 families residing in the city . The population density was 2 @,@ 563 @.@ 0 per square mile ( 989 @.@ 8 / km2 ) . There were 20 @,@ 838 housing units at an average density of 1 @,@ 082 @.@ 8 per square mile ( 418 @.@ 2 / km2 ) . 
