| Business | Phone |
| Mcallen Water Laboratory 2501 W Expressway 83, Mcallen 78503 | (956) 688-3394 |
| Keep Mc Allen Beautiful 301 N Broadway St, Mcallen 78501 | (956) 688-3241 |
| Keep Mc Allen Beautiful 301 S Main St, Mcallen 78501 | (956) 688-3241 |
| Mc Allen Water Dept 1300 W Houston Ave, Mcallen 78501 | (956) 972-7060 |
| Mc Allen Cable Network 1300 W Houston Ave, Mcallen 78501 | (956) 972-7254 |
| Mc Allen City Office 1501 Pecan Blvd, Mcallen 78501 | (956) 630-1919 |
| Mc Allen City Secretary 1300 W Houston Ave, Mcallen 78501 | (956) 972-7130 |
| Mc Allen City Svc Center 2000 S Main St, Mcallen 78503 | (956) 688-3254 |
| Mc Allen Information Tech 1300 W Houston Ave, Mcallen 78501 | (956) 972-7170 |
| Mc Allen Downtown Improvement 301 S Main St, Mcallen 78501 | (956) 928-1055 |
| Mc Allen Engineering Dept 1300 W Houston Ave, Mcallen 78501 | (956) 972-7070 |
| Mc Allen Human Resources 1300 W Houston Ave, Mcallen 78501 | (956) 972-7160 |
| Mcallen Convention Ctr 1300 S 10th St, Mcallen 78501 | (956) 688-3400 |
| Mc Allen Legal Dept 1300 W Houston Ave, Mcallen 78501 | (956) 972-7123 |
| Mc Allen Materials Management 4001 N Bentsen Rd, Mcallen 78504 | (956) 687-7731 |
| Mcallen Downtown Svc Dept 301 S Main St, Mcallen 78501 | (956) 688-3210 |
| Mc Allen Zoning Enforcement 1300 W Houston Ave, Mcallen 78501 | (956) 972-7050 |
| Mc Allen Purchasing & Contract 1300 W Houston Ave, Mcallen 78501 | (956) 972-7140 |
| Mcallen Traffic Operations 210 N 20th St, Mcallen 78501 | (956) 688-3420 |
| Mc Allen Waste Water 4100 Idela Ave, Mcallen 78503 | (956) 688-3380 |
| Mc Allen Water Reclamation 2100 W Sprague St, Mcallen 78504 | (956) 380-6858 |