⚖️ Official Rankings
10 Best Attorneys in O'Fallon, MO (September 2026)
We compared 10 attorneys serving O'Fallon and Saint Charles County, Missouri, and ranked the top providers by verified reviews, ratings, and local reputation — 694 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Welch Law LLC. Updated for September 2026.
- Attorneys ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 694
- Area codes
- 636, 314
⭐ 5.0 · 199 reviews
50 Centre On The Lk Ste. 200, Lake St Louis, MO 63367
⭐ 4.9 · 238 reviews
139 Berkshire Downs Dr, O'Fallon, MO 63376
⭐ 4.9 · 42 reviews
2342 Technology Dr Ste 120, O'Fallon, MO 63368
⭐ 4.8 · 86 reviews
2315 Technology Dr #119, O'Fallon, MO 63368
⭐ 5.0 · 25 reviews
14 Richmond Center Ct, St Peters, MO 63376
⭐ 4.9 · 31 reviews
300 Fort Zumwalt Square #108, O'Fallon, MO 63366
⭐ 4.9 · 21 reviews
110 Laura K Dr, O'Fallon, MO 63366
⭐ 5.0 · 13 reviews
225 S Main St #250, O'Fallon, MO 63366