CBP data indicates that there are more establishments categorized as retail trade businesses with between one and four employees in 51601 than in any other category.
The following table shows how many construction businesses with between one and four employees were in 51601 during the period from 2012 to 2016.
Construction businesses with between one and four employees in 51601 (2012-2016)
Year
Total businesses
2012
13
2013
11
2014
12
2015
10
2016
13