Neighboring Block Groups: 
Block Group 181811-1, 
Block Group 181713-1, 
Block Group 181704-1, 
Block Group 181822-1, 
Block Group 181506-1, 
Block Group 181711-2, 
Block Group 181713-2, 
Block Group 181817-2, 
Block Group 181711-3, 
Block Group 181822-3, 
Block Group 181704-3, 
Block Group 181704-4