Southern Mail Service Inc
USDOT 172954 · MC-1535071 · Conroe, Texas · Interstate for-hire carrier · 250–499 power units
Southern Mail Service Inc is a corporation based in Conroe, Texas, registered with the FMCSA as an interstate carrier (authorized for hire). It reports 381 power units and 275 drivers, which ranks it #78 by fleet size among 910 active for-hire carriers with 50+ power units headquartered in Texas. In the 24 months to Sep 24, 2026 its trucks were inspected 128 times – about 0.3 inspections per power unit. 20.5% of vehicle inspections and 0.8% of driver inspections ended with an out-of-service order, against 18.3% and 2.0% for carriers of the same size nationally. FMCSA records 27 reportable crashes in the last 24 months (20 injuries, 3 fatalities, 23 tow-away), or 7.1 per 100 power units versus 4.2 for its size band. Crash counts in FMCSA data do not indicate fault. Its registered cargo types are general freight, us mail, paper products.
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Registration and contact
| Legal name | Southern Mail Service Inc |
|---|---|
| DBA name | — |
| USDOT number | 172954 |
| Operating authority (docket) | MC-1535071 |
| Entity type | Authorized for Hire |
| Operation | Interstate |
| Business type | Corporation |
| Physical address | 2505 N Frazier, Conroe, TX 77303 |
| Phone | (800) 958-5844 |
| First registered | Jun 1, 1974 |
| Last MCS-150 update | May 13, 2026 |
| Hazmat carrier | No |
Check live authority, insurance and out-of-service status: FMCSA SAFER snapshot for USDOT 172954.
Fleet and drivers
| Equipment | Owned | Term-leased | Trip-leased |
|---|---|---|---|
| Straight trucks | 15 | 11 | 0 |
| Truck tractors | 322 | 13 | 0 |
| Trailers | 568 | 0 | 0 |
- 0.72 drivers per power unit (national median for 50+ unit fleets: 0.99).
- 1.7 trailers per tractor.
- 35,000,000 miles reported for 2026 – about 91,864 miles per power unit vs a 41,335 median for 250–499-unit fleets.
- 97% of listed equipment is owned rather than leased.
- 275 CDL drivers; 275 drivers operate interstate beyond 100 miles, 0 within 100 miles.
Safety record
Roadside inspections Sep 25, 2024 – Sep 24, 2026; crashes Nov 1, 2024 – Oct 31, 2026. Benchmarks: 250–499-unit for-hire carriers nationally (792) and Texas carriers with 50+ units (910).
| Measure | Southern Mail Service Inc | Same size, US | TX average | |
|---|---|---|---|---|
| Vehicle out-of-service rate | 20.5% | 18.3% | 18.6% | 12% higher than average |
| Driver out-of-service rate | 0.8% | 2.0% | 3.5% | 61% lower than average |
| Crashes per 100 power units | 7.1 | 4.2 | 3.9 | 70% higher than average |
| Inspections | 128 | 128 with a driver check, 88 with a vehicle check, 60 BASIC violations recorded | ||
| FMCSA safety rating | Satisfactory (rated Nov 13, 2003) | |||
Cargo carried
Less common in this directory: us mail (612 of 5,000 carriers).
Similar carriers in Texas
Closest fleet size and cargo mix among Texas carriers in this directory.
| Carrier | City | Power units | Drivers | Inspections (24 mo) | Vehicle OOS | Crashes (24 mo) |
|---|---|---|---|---|---|---|
| M&J Carriers LLC USDOT 2349233 | Laredo | 292 | 294 | 877 | 22.5% | 21 |
| SPG Transportation Inc USDOT 2881143 | Grand Prairie | 357 | 357 | 542 | 22.5% | 21 |
| Raider Express Inc USDOT 817781 | Fort Worth | 350 | 350 | 603 | 4.3% | 24 |
| Just in Time Cargo Inc USDOT 2129045 | Fort Worth | 348 | 590 | 1,080 | 13.7% | 44 |
| Bancroft and Sons Transportation LLC USDOT 225397 | Grand Prairie | 185 | 325 | 278 | 20.9% | 18 |
| Angulo Transportation Service LLC USDOT 2477493 | Laredo | 370 | 195 | 306 | 11.5% | 16 |
Other carriers near Conroe
| Carrier | City | Power units | Drivers | Inspections (24 mo) | Vehicle OOS | Crashes (24 mo) |
|---|---|---|---|---|---|---|
| Mule Dust Inc USDOT 2208160 | Conroe | 80 | 40 | 40 | 24.1% | 5 |
| Rig Runners LLC USDOT 1014498 | The Woodlands | 695 | 650 | 763 | 24.2% | 26 |
| Incompass Logistics LLC USDOT 2631140 | The Woodlands | 237 | 61 | 30 | 28.0% | 3 |
| Patterson Motor Freight LLC USDOT 1061388 | The Woodlands | 233 | 257 | 149 | 18.9% | 4 |
| Kooner Truck Repair Inc USDOT 3757006 | Tomball | 179 | 177 | 17 | 16.7% | 1 |
| Force Logistics US LLC USDOT 2878088 | Tomball | 161 | 161 | 341 | 20.3% | 11 |
| Magna Flow International Inc USDOT 1087258 | Humble | 111 | 106 | 44 | 20.9% | 5 |
| Goodfella's Lease LLC USDOT 2932743 | Huntsville | 100 | 50 | 35 | 26.7% | 1 |
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FAQ
What is the USDOT number of Southern Mail Service Inc?
Southern Mail Service Inc is registered with USDOT number 172954 and operating authority MC-1535071.
How many trucks does Southern Mail Service Inc have?
It reports 381 power units (335 tractors, 26 straight trucks) and 568 trailers, with 275 drivers, on its last MCS-150 update (May 13, 2026).
Where is Southern Mail Service Inc located?
Its registered physical address is in Conroe, Texas 77303.
What is the out-of-service rate of Southern Mail Service Inc?
Over 24 months, 20.5% of vehicle inspections and 0.8% of driver inspections resulted in an out-of-service order (same-size national average: 18.3% vehicle, 2.0% driver).
Source: FMCSA Company Census File, SMS inspection file and Crash File (data.transportation.gov), refreshed 2026-11-04. Figures are as reported to FMCSA and may lag. How we calculate these numbers. Spotted an error? Carriers update their record with FMCSA via the MCS-150 form; see corrections.