Chemical Manufacturing · Industrial Minerals
PQ Corp. offices and sites
PQ Corp. has 10 sites in 3 countries; 9 sites have open roles now. The busiest is Joliet. The head office is in Malvern.
Data updated Nov 15, 2026 · Back to the company report
10Sites
3Countries
9Hiring offices
14Open roles
Every site
| Site | Country | Type | Open roles | Roles in 90 days | Hires most for | Engineering | Seen since |
|---|---|---|---|---|---|---|---|
| Malvern | United States | Headquarters | 1 | 2 | Sales | 0% | Aug 2026 |
| Joliet | United States | Plant / site | 5 | 4 | Field & Service, Sales | 0% | Mar 2026 |
| Chester | United States | Plant / site | 2 | 3 | Management, Industrial Engineering | 0% | Jun 2026 |
| Saint Louis | United States | Not classified | 1 | 2 | Field & Service | 0% | Aug 2026 |
| Gurnee | United States | Not classified | 1 | 2 | Field & Service | 0% | Sep 2026 |
| Tlalnepantla | Mexico | Sales office | 1 | 2 | Sales | 0% | Sep 2026 |
| Augusta | United States | Not classified | 1 | 1 | Field & Service | 0% | Apr 2026 |
| Clarksville | United States | Not classified | 1 | 1 | Field & Service | 0% | Sep 2026 |
| Warrington | United Kingdom | Not classified | 1 | 1 | Field & Service | 0% | Oct 2026 |
| Valley | United States | Regional office | 0 | 0 |
Source: office addresses in postings and company registers
Sites no longer seen
Whitecourt
Canada · Not classified
last seen Jun 2026
La Salle
United States · Not classified
last seen Aug 2026
How to cite
PQ Corp., Offices. Alion, Nov 15, 2026. https://alion.io/company/pqcorp/offices