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Professional Service in Ontario
231 professional service businesses in Ontario, United States. All Ontario businesses →
At a glance
As of August 2026, business.wiki lists 231 professional service businesses in Ontario— 2.5% of the city's 9,281 listed businesses. 100% publish a phone number and 94% have a website, spread across 111 postcode districts. The largest local presence is Staffmark with 3 locations in the city.
Where in Ontario: 91761 (47)·91764 (20)·91762 (10)·44906 (8)·91761-1428 (6)·91761-1221 (5)·91761-8607 (5)·14519 (4)
Chains here: Staffmark ×3·Ajilon ×2·AppleOne Employment Services ×2·Exact Staff ×2·Kelly Services ×2
Directory — top 30 by data completeness
| Business | Address | Postcode | Phone | Web |
|---|---|---|---|---|
| Staples | 125 SE 13th St | 97914-3014 | +15418890880 | ✓ |
| Office Depot | 2205 S Grove Ave | 91761-5602 | +19099472282 | ✓ |
| HearingLife of Mansfield OH | 836 N Lexington Springmill Rd | 44906-1117 | +14197754272 | ✓ |
| Employbridge (Prologistix / ResourceMFG / Select Staffing) | 402 S Milliken Ave | 91761-7850 | +19099300555 | ✓ |
| US Army Recruiting Office Mansfield | 2010 W 4th St | 44906-4303 | +14196326094 | ✓ |
| ASAP Staffing | 2207 S Euclid Ave | 91762-6519 | +19093950015 | ✓ |
| CitiStaff Solutions | 1865 E 4th St | 91764-2652 | +19099843974 | ✓ |
| Options Staffing Solutions | 1435 S Grove Ave | 91761-4589 | +19099230575 | ✓ |
| It's Caliber | 601 S Milliken Ave | 91761-7898 | +18005730884 | ✓ |
| ProLogistix - Ontario, CA | 845 S Milliken Ave | 91761-7857 | +19093604310 | ✓ |
| WAXIE Sanitary Supply, An Envoy Solutions Company | 905 N Wineville Ave | 91764-8508 | +19099423100 | ✓ |
| Assa Abloy | 5678 Concours | 91764-5394 | +19095932100 | ✓ |
| Fruit Growers Supply Carton Plant | 225 S Wineville Ave | 91761-7891 | +19092560118 | ✓ |
| Square One Staffing | 4295 Jurupa St | 91761-1428 | +19092187859 | ✓ |
| Bullet Liner by VTS | 1440 W Brooks St | 91762-3660 | +19097364332 | ✓ |
| Staples Distribution Center | 1500 S Dupont Ave | 91761-1406 | +19099377800 | ✓ |
| York Employment | 980 N Ontario Mills Dr | 91764-5241 | +19095810181 | ✓ |
| ACS Staffing | 642 E Francis St | 91761-5405 | +15625726792 | ✓ |
| Simplified Labor Staffing Solutions | 1035 S Milliken Ave | 91761-7862 | +19092947822 | ✓ |
| Interlink Staffing | 2215 S Mountain Ave | 91762-6133 | +19093959235 | ✓ |
| Labornow, Inc | 2559 S Euclid Ave | 91762-6620 | +19097816173 | ✓ |
| Avent Group Inc | 2414 S Grove Ave | 91761-6224 | +19519775314 | ✓ |
| Partnership Staffing Solutions | 2448 S Vineyard Ave | 91761-6488 | +19099303710 | ✓ |
| Rockyou Hibachi | 4874 S Grayson Way | 91762 | +16266621314 | ✓ |
| Consolidated Staffing Solutions | 1511 W Holt Blvd | 91762-3656 | +19097403511 | ✓ |
| Amniamedia | 1256 W Brooks St | 91762-3663 | +19514402823 | ✓ |
| Daisyeco IT Supplies | 761 W Holt Blvd | 91762-3628 | +19099895585 | ✓ |
| Align Professional Staffing | 112 S Cypress Ave | 91762-3620 | +19092975283 | ✓ |
| Ultra Personnel | 326 E Holt Blvd | 91761-1609 | +19092265830 | ✓ |
| Pirate Staffing | 116 W Holt Blvd | 91762 | +19099843333 | ✓ |
Showing the 30 most complete records of 231 total. Every listed business has its own page with map, nearby competitors and city context.
About this data
Counts are computed live from our database of 9,281 Ontario businesses, built on open data from the Overture Maps Foundation and refreshed with each monthly release. Cite as: “business.wiki, Professional Service in Ontario (August 2026)”.