CBP data indicates that there are more establishments categorized as construction businesses with between one and four employees in 56621 than in any other category.
The following table shows how many retail trade businesses with between one and four employees were in 56621 during the period from 2012 to 2016.
Retail trade businesses with between one and four employees in 56621 (2012-2016)
Year
Total businesses
2012
7
2013
7
2014
11
2015
10
2016
10