| 83544 | Iowa | IA | Ottosen | 50570 | Trinity Lutheran Church | Lutheran | 515-379-1849 | 307 BRADY AVENUE Ottosen, IA 50570 US | | |
| 83545 | Iowa | IA | Ottumwa | 52501 | Calvary Baptist Church | Baptist | 641-684-6473 | 915 OVERMAN AVENUE Ottumwa, IA 52501 US | http://www.calvarybaptistott.com/ | ottcal@mchsi.com |
| 83546 | Iowa | IA | Ottumwa | 52501 | Willard Street United Methodist Church | Methodist | 641-682-5421 | 175 N Willard St OTTUMWA, IA 52501 US | http://www.wstumc.org | willardstumc@msn.com |
| 83547 | Iowa | IA | Ottumwa | 52501 | Faith Baptist Church | Baptist | 641-682-2700 | 8280 105TH AVENUE Ottumwa, IA 52501 US | http://www.faith1.org/ | faith1@netins.net |
| 83548 | Iowa | IA | Ottumwa | 52501 | First Presbyterian Church | Presbyterian | 641-684-5465 | 228 WEST 4TH STREET, PO BOX 733 Ottumwa, IA 52501 US | mailto:fpcottum@awsllc.net | |
| 83549 | Iowa | IA | Ottumwa | 52501 | Jubilee Bible Church | Charismatic | 641-683-1277 | 111 N. Green St. Ottumwa, IA 52501 US | http://www.jubileebiblechurch.org | jubileebible@qwestoffice.net |
| 83550 | Iowa | IA | Ottumwa | 52501 | Ottumwa Baptist Temple | Baptist | 641-682-4836 | 238 WEST WILLIAMS STREET Ottumwa, IA 52501 US | mailto:myouthpastor@yahoo.com | |
| 83521 | Iowa | IA | Oskaloosa | 52577 | Grace Lutheran Church | Lutheran | 641-672-2762 | HIGHWAY 63 SOUTH Oskaloosa, IA 52577 US | | |
| 83522 | Iowa | IA | Oskaloosa | 52577 | Hillside Bible Church | Bible | 641-673-6305 | 2352 HIGHWAY 92 Oskaloosa, IA 52577 US | | |
| 83523 | Iowa | IA | Oskaloosa | 52577 | Oskaloosa Church Of Christ | Church of Christ | 641-673-4569 | 215 A AVENUE WEST Oskaloosa, IA 52577 US | | |
| 83524 | Iowa | IA | Oskaloosa | 52577 | Oskaloosa Community Church | Community | 641-673-7247 | 300 NORTH A STREET Oskaloosa, IA 52577 US | | |
| 83525 | Iowa | IA | Oskaloosa | 52577 | Park Church Of Christ | Church of Christ | 641-673-4481 | 1804 BURLINGTON ROAD Oskaloosa, IA 52577 US | | |
| 83526 | Iowa | IA | Oskaloosa | 52577 | Reorganized Church Of Jesus | Other Christian Services | 641-673-6474 | 330 NORTH 6TH Oskaloosa, IA 52577 US | | |
| 83527 | Iowa | IA | Oskaloosa | 52577 | Saint James Episcopal Church | Episcopal | 641-673-4218 | 207 SOUTH 3RD STREET Oskaloosa, IA 52577 US | http://www.stjamesoskaloosa.org/ | |
| 83528 | Iowa | IA | Oskaloosa | 52577 | Saint John Lutheran Church | Lutheran | 641-673-6546 | 2370 MERINO AVENUE Oskaloosa, IA 52577 US | http://www.stjohnosky.org/contactus.html | |
| 83529 | Iowa | IA | Oskaloosa | 52577 | Saint Mary's Church | Catholic | 641-673-6680 | 315 1ST AVENUE EAST Oskaloosa, IA 52577 US | http://stmarysosky.com/ | |
| 83530 | Iowa | IA | Oskaloosa | 52577 | Wesleyan Church | Wesleyan | 641-673-3249 | 1004 SOUTH 18TH Oskaloosa, IA 52577 US | | |
| 83531 | Iowa | IA | Ossian | 52161 | Our Lady Of Seven Dolors | Catholic | 563-532-9366 | 418 E Main St. OSSIAN, IA 52161 US | http://www.arch.pvt.k12.ia.us/Parishes/index.html | |
| 83532 | Iowa | IA | Ossian | 52161 | Living Hope Baptist Church | Baptist | | 104 JESSIE STREET Ossian, IA 52161 US | http://livinghopebaptist.com | |
| 83533 | Iowa | IA | Ossian | 52161 | Bethany Church | Non-Denominational | 563-532-9674 | 29746 IRIS ROAD Ossian, IA 52161 US | | |
| 83534 | Iowa | IA | Ossian | 52161 | First Lutheran Church | Lutheran | 563-532-9261 | SOUTH OF CITY Ossian, IA 52161 US | | |
| 83535 | Iowa | IA | Ossian | 52161 | Lutheran Church | Lutheran | 563-532-9285 | 305 JESSIE STREET Ossian, IA 52161 US | | |
| 83536 | Iowa | IA | Ossian | 52161 | Saint Francis De Sales Church | Catholic | 563-532-9009 | 420 EAST MAIN STREET Ossian, IA 52161 US | | |
| 83537 | Iowa | IA | Ossian | 52161 | Saint Francis De Sales Rectory | Catholic | 563-532-9366 | 418 EAST MAIN STREET Ossian, IA 52161 US | | |
| 83538 | Iowa | IA | Ossian | 52161 | Stavanger Lutheran Church | Lutheran | 563-532-9635 | 1936 115TH STREET Ossian, IA 52161 US | | |
| 83539 | Iowa | IA | Otho | 50569 | United Methodist Church | United Methodist | 515-972-4317 | 428 MAIN STREET Otho, IA 50569 US | | |
| 83540 | Iowa | IA | Otley | 50214 | Otley Reformed Church | Other Christian Services | 515-627-5407 | 700 JOHNSTON STREET Otley, IA 50214 US | http://www.otleychurch.org/ | |
| 83541 | Iowa | IA | Oto | 51044 | St. Mary | Catholic | 712-882-1780 | P.O. Box 67 OTO, IA 51044 US | http://www.scdiocese.org/DioceseInfo/Parishes/tabid/68/Default.aspx#O | |
| 83542 | Iowa | IA | Oto | 51044 | Saint Mary's Catholic Church | Catholic | 712-827-4467 | 606 STATE STREET Oto, IA 51044 US | | |
| 83543 | Iowa | IA | Oto | 51044 | United Church Of Christ | United Church of Christ | 712-827-4415 | 201 STATE STREET Oto, IA 51044 US | | |