| Company Name | Affiliation | Physical Address | Website | NAICS Code |
|---|---|---|---|---|
| 2 The Tee Outfitters | 2020 Golf Outing | 44 Hokes Mill Road York, Pennsylvania 17404 Map It | 2theteeoutfitters.com | |
| Aall American Fasteners | 50 Aberdeen Road Emigsville, Pennsylvania 17318 Map It | aallamericanfasteners.com | 335931, 332722 | |
| Aavid Thermacore Inc. | 780 Eden Road Lancaster, Pennsylvania 17601 Map It | thermacore.com | 3339999, 541712 | |
| Abbottstown Industries | 420 W. Fleet Street Abbottstown, Pennsylvania 17301 Map It | abbind.com | 333514 | |
| ACCO Material Handling Systems | 76 Acco Drive York, Pennsylvania 17402 Map It | accomhs.com | ||
| Adept Corporation | 4601 N. Susquehanna Trail York, Pennsylvania 17406 Map It | adeptcorp.com | 326130 | |
| Adhesives Research, Inc. | 400 Seaks Run Road Glen Rock, Pennsylvania 17327 Map It | adhesivesresearch.com | 325520, 325500 | |
| Advanced Conversion Technology | 2001 Fulling Mill Road Middletown, Pennsylvania 17057 Map It | actpower.com | 335999, 334418 | |
| Advanced Industrial Services, Inc. | 3250 Susquehanna Trail York, Pennsylvania 17406 Map It | ais-york.com | 238990 | |
| Aerotek Commercial Staffing | 3411 Concord Road York, Pennsylvania 17402 Map It | aerotek.com | 561311 | |
| Air Dynamics Industrial Systems Corporation | 180 Roosevelt Avenue York, Pennsylvania 17401 Map It | airdynamics.net | 333413 | |
| Airline Hydraulics | 2A Interchange Place York, Pennsylvania 17406 Map It | airlinehyd.com | ||
| Alliance Engineering, Inc. | 9011 Arboretum Parkway Suite 310 Richmond, Virginia 23236 Map It | allianceengineering.com | 541330 | |
| AllSearch Recruiting | 236 N. George Street York,, Pennsylvania 17401 Map It | allsearchinc.com | ||
| Alro Steel Corporation | Annual Event Sponsor | 130 Keeney Lane York, Pennsylvania 17406 Map It | alro.com | 423510 |
| American Hydro Corp. | 135 Stonewood Road York, Pennsylvania 17402 Map It | ahydro.com | 335, 311, 333, 611 | |
| American Products, Inc. | 45 Leigh Drive York, Pennsylvania 17406 Map It | americanproductsinc.com | 334112 | |
| Ames Companies, Inc. | 465 Railroad Avenue Camp Hill, Pennsylvania 17011 Map It | ames.com | ||
| Ames Industries Inc. | 2999 Elizabethtown Road Hershey, Pennsylvania 17033 Map It | amesindustries.com | SIC 325, 211, 326, 199, 333 | |
| Ammac, Inc. | 3405 Board Road York, Pennsylvania 17406 Map It | ammacinc.com | 332721 | |
| Amphenol InterCon Systems | 825 Old Trail Road, Suite A Etters, Pennsylvania 17319 Map It | interconsystems.com | 33441701 | |
| AMZ Corporation | 2206 Pennsylvania Avenue York, Pennsylvania 17404-1790 Map It | amzmfg.com | 332813 | |
| Anvil International | 1411 Lancaster Avenue Columbia, Pennsylvania 17512 Map It | anvilintl.com | 332919 | |
| Apex Tool Group | 3990 E. Market Street York, Pennsylvania 17402-2769 Map It | apextoolgroup.com | 333, 991, 332, 618 | |
| Apprenticeship & Training Office (ATO) | Partner | 651 Boas Street, 12th floor Labor & Industry Building Harrisburg, Pennsylvania 17121 Map It | dli.pa.gov | |
| Company Name | Affiliation | Physical Address | Website | NAICS Code |