| Business | Phone |
| Assembly Of God Church 235 W Center St, Firth 83236 | (208) 346-6911 |
| Bethlehem Lutheran Church 413 N Main St, Firth 83236 | (208) 346-6271 |
| Church-Jesus Christ-Lds 252 E Center St, Firth 83236 | (208) 346-6111 |
| Church-Jesus Christ-Lds 744 N 600 E, Firth 83236 | (208) 346-6066 |
| Firth Lds Stake Firth 83236 | (208) 346-6282 |