Short answer
DENUE lists 288 auto-parts and metal fabrication plants with 11 or more staff in San Luis Potosí: 107 auto parts and 181 metal fabrication. 147 have 51 or more staff, and 84 match an IMMEX program on exact name and postal code. The median straight-line distance to the Laredo crossing is 626 km.
Key facts
- INEGI state code
- 24
- Municipalities with plants
- 14
- IMMEX programs registered in the state
- 184 (August 2026 directory)
The numbers
| Group | Plants |
|---|---|
| Auto parts (SCIAN 3363), 11+ staff | 107 |
| Metal fabrication (SCIAN 332), 11+ staff | 181 |
| With 51 or more staff | 147 |
| With an exact IMMEX match (name and postal code) | 84 (29% of plants) |
| Staff band | Plants |
|---|---|
| 11 to 30 | 122 |
| 31 to 50 | 19 |
| 51 to 100 | 28 |
| 101 to 250 | 51 |
| 251 or more | 68 |
What San Luis Potosí plants make
| Process | Plants, 11+ staff | With 51+ staff |
|---|---|---|
| CNC machining | 70 | 7 |
| Welded structures | 37 | 9 |
| Stamping and forging | 32 | 23 |
| Wire harnesses and electrical parts | 19 | 18 |
| Coating and plating | 17 | 9 |
| Engine and powertrain parts | 14 | 12 |
| Steering and suspension parts | 12 | 12 |
| Seating and interior trim | 9 | 9 |
| Brake parts | 9 | 9 |
| Wire forms and springs | 6 | 2 |
Where the plants are
Plants in San Luis Potosí sit in 14 municipalities. The largest clusters are below.
| Municipality | Plants |
|---|---|
| San Luis Potosí | 158 |
| Villa de Pozos SLP | 50 |
| Soledad de Graciano Sánchez | 38 |
| Villa de Reyes | 28 |
Distance to the border
Straight-line distance from a plant in San Luis Potosí to the World Trade International Bridge at Laredo runs from 448 to 643 km, with a median of 626 km. Road distance is longer, and other crossings may suit your freight.
Before you approach a plant
A DENUE listing shows that an establishment exists. Check its IMMEX status and the SAT 69-B list before you book a visit; the verification guide has the steps, and what Testigo checks shows the record you should end up with.
Frequently asked questions
How many auto parts plants are in San Luis Potosí?
INEGI’s DENUE lists 107 auto-parts plants with 11 or more staff in San Luis Potosí, plus 181 metal fabrication plants. Of the 288 together, 147 have 51 or more staff. Testigo counted these from INEGI’s bulk files on 25 September 2026.
Which cities in San Luis Potosí have the most plants?
In DENUE, San Luis Potosí (158), Villa de Pozos SLP (50), Soledad de Graciano Sánchez (38) have the most plants among the 14 municipalities with auto-parts or metal fabrication plants of 11 or more staff. Counts are establishments in INEGI’s directory as of 25 September 2026.
How far is San Luis Potosí from the US border?
Straight-line distance from plants in San Luis Potosí to the Laredo crossing runs from 448 to 643 km, median 626 km. Road distance is longer. Testigo measures to Laredo because most of its pilot buyers cross there; other crossings are closer for some plants.