| General Information | |
|---|---|
| Country | United States |
| State/Province | Texas |
| Major City | Houston |
| Time Zone | Central (UTC-06:00) |
| Current Local Time | 03:36 |
| Prefix | County | Primary City |
|---|---|---|
| 346-200 | Harris | Houston |
| 346-201 | Harris | Houston |
| 346-202 | Harris | Houston |
| 346-203 | Harris | Houston |
| 346-204 | Harris | Harris |
| 346-205 | Harris | Houston |
| 346-206 | Harris | Houston |
| 346-207 | Harris | Houston |
| 346-208 | Galveston | Dickinson |
| 346-209 | Brazoria | Liverpool |
| 346-212 | Harris | Houston |
| 346-213 | Harris | Houston |
| 346-215 | Brazoria | Alvin |
| 346-216 | Harris | Baytown |
| 346-217 | Harris | Houston |
| 346-218 | Harris | Cypress |
| 346-219 | Harris | Houston |
| 346-221 | Harris | Houston |
| 346-222 | Harris | La Porte |
| 346-224 | Harris | Houston |
| 346-225 | Harris | Tomball |
| 346-228 | Harris | Houston |
| 346-229 | Harris | Houston |
| 346-231 | Harris | Houston |
| 346-234 | Harris | Houston |
| 346-240 | Harris | Houston |
| 346-247 | Harris | Houston |
| 346-248 | Montgomery | Pinehurst |
| 346-251 | Harris | Harris |
| 346-270 | - | - |
| 346-300 | Harris | Houston |
| 346-301 | Montgomery | Splendora |
| 346-302 | Harris | Houston |
| 346-303 | Harris | Harris |
| 346-304 | Fort Bend | Fort Bend |
| 346-305 | Montgomery | Spring |
| 346-307 | Harris | Harris |
| 346-308 | Harris | Harris |
| 346-309 | Fort Bend | Fort Bend |
| 346-312 | Harris | Houston |
| 346-313 | Harris | Houston |
| 346-314 | - | - |
| 346-331 | Harris | Houston |
| 346-333 | Harris | Houston |
| 346-400 | Harris | Houston |
| 346-401 | Harris | Houston |
| 346-444 | Harris | Houston |
| 346-571 | Harris | Harris |
| 346-600 | Harris | Humble |
| 346-666 | Harris | Cypress |