| Business | Phone |
| Hillandale Baptist Church 2601 Powder Mill Rd, Adelphi 20783 | (301) 434-6033 |
| Hindu Temple Of Metropolitan 10001 Riggs Rd, Adelphi 20783 | (301) 434-1000 |
| Iglesia Apostolica Fuente Del 8801 21st Pl, Adelphi 20783 | (301) 439-5547 |
| Paint Branch Unitarian Church 3215 Powder Mill Rd, Adelphi 20783 | (301) 937-3666 |
| Adelphi Bible Church 8510 Riggs Rd, Adelphi 20783 | (301) 439-3180 |
| Adelphi Friends Meeting 2303 Metzerott Rd, Adelphi 20783 | (301) 445-1114 |
| Adelphi Presbyterian Church 9401 Riggs Rd, Adelphi 20783 | (301) 434-6337 |
| St Francis Parish-Rectory 10523 Carnation Ct, Adelphi 20783 | (301) 439-8877 |
| Christadelphian Chapel 9240 Riggs Rd, Adelphi 20783 | (301) 439-0063 |
| Christian Life Ctr 3000 Buck Lodge Rd, Adelphi 20783 | (301) 474-5080 |