Velarion Records

All Other Professional, Scientific, and Technical Services in Prince William County, VA: 54 establishments

All Other Professional, Scientific, and Technical Services, NAICS 541990. 2,123 federal records on file in Prince William County, 5 programs (why shown together). Prince William County is 2nd of 132 Virginia counties with records in more than one program.

Establishments in this industry in Prince William County 54

Employees in mid-March: 232 · First-quarter payroll: $5,140 thousand · Annual payroll: $22,649 thousand · By size: 46 with fewer than 5 employees, 4 with 5 to 9 employees, 3 with 20 to 49 employees.

Hospitals filing a Medicare cost report in Prince William County 2

Nursing facilities in Prince William County 4

Hazardous-waste handlers in Prince William County 380

4 large quantity generators · 50 small quantity generators · 55 with at least one violation on record.

Clean Air Act facilities in Prince William County 186

5 classified as major sources · the county is in a designated nonattainment area.

Motor carriers in Prince William County 1,551

Other industries in Prince William County

Programs in Prince William County

Every federal record in Prince William County → All Virginia counties →

Census CBP 2022, federal files read 2026-09-15: method