| Business | Phone |
| Monroe Township Adm Office 1 Municipal Plz, Jamesburg 8831 | (732) 521-4400 |
| Monroe Township Municipal Ct 1 Municipal Plz, Jamesburg 8831 | (732) 521-4020 |
| Monroe Twp Clerk 1 Municipal Plz, Jamesburg 8831 | (732) 656-4573 |
| Monroe Twp Construction Dept 76 Gravel Hill Spotswood Rd, Jamesburg 8831 | (732) 656-4585 |
| Borough Of Jamesburg 31 E Railroad Ave, Jamesburg 8831 | (732) 521-2223 |
| Jamesburg Borough Hall 131 Perrineville Rd, Jamesburg 8831 | (732) 521-2222 |
| Jamesburg Borough Hall 31 E Railroad Ave # 2, Jamesburg 8831 | (732) 521-2222 |