Cities (Delaware)  | Churches (45) |
| Bear, DE |  St. Elizabeth Ann Seton  |
| Bethany Beach, DE | St. Ann |
| Claymont, DE | Holy Rosary |
| Delaware City, DE | St. Paul |
| Dover, DE | Holy Cross |
| Elsmere, DE | Corpus Christi |
| Frankford, DE | Our Lady of Guadalupe |
| Georgetown, DE | St. Michael the Archangel |
| Greenville, DE | St. Joseph on the Brandywine |
| Harrington, DE | St. Bernadette |
| Hockessin, DE | St. Mary of the Assumption |
| Lewes, DE | St. Jude the Apostle |
| Middletown, DE | St. Joseph |
| Middletown, DE |  St. Joseph |
| Milford, DE | St. John the Apostle |
| Millsboro, DE | Mary, Mother of Peace |
| New Castle, DE | Holy Spirit |
| New Castle, DE | Our Lady of Fatima |
| New Castle, DE | St. Peter the Apostle |
| Newark, DE | Holy Family |
| Newark, DE | St. John the Baptist–Holy Angels |
| Newark, DE | St. Margaret of Scotland |
| Newark, DE | St. Thomas More
University of Delaware |
| Rehoboth Beach, DE | St. Edmond |
| Seaford, DE | Our Lady of Lourdes |
| Smyrna, DE | St. Polycarp |
| Wilmington, DE |  St. Peter (Cathedral) |
| Wilmington, DE | Christ Our King |
| Wilmington, DE | Holy Child |
| Wilmington, DE | Immaculate Heart of Mary |
| Wilmington, DE | Resurrection |
| Wilmington, DE | St. Ann |
| Wilmington, DE | St. Anthony of Padua |
| Wilmington, DE | St. Catherine of Siena |
| Wilmington, DE | St. Elizabeth |
| Wilmington, DE | St. Hedwig |
| Wilmington, DE | St. Helena |
| Wilmington, DE | St. John the Beloved |
| Wilmington, DE | St. Joseph |
| Wilmington, DE | St. Mary Magdalen |
| Wilmington, DE | St. Mary of the Immaculate Conception |
| Wilmington, DE | St. Matthew |
| Wilmington, DE | St. Patrick |
| Wilmington, DE | St. Paul |
| Wilmington, DE | St. Thomas the Apostle |
| Cities (Maryland) | Churches (33) |
| Berlin, MD | St. John Neumann |
| Cambridge, MD | St. Mary Refuge of Sinners |
| Centreville, MD | Our Mother of Sorrows |
| Chesapeake City, MD | St. Rose of Lima |
| Chester, MD | St. Christopher |
| Chestertown, MD | Sacred Heart |
| Childs, MD |  Our Lady of the Highways
Oblates Retreat Center |
| Church Creek, MD | St. Mary Star of the Sea |
| Conowingo, MD | St. Patrick |
| Cordova, MD | St. Joseph |
| Delmar, MD | Holy Redeemer |
| Denton, MD | St. Elizabeth |
| Easton, MD | Sts. Peter and Paul |
| Elkton, MD | Immaculate Conception |
| Galena, MD | St. Dennis |
| Marydel, MD | Immaculate Conception |
| North East, MD | St. Jude |
| Ocean City, MD | Holy Savior |
| Ocean City, MD | St. Andrew |
| Ocean City, MD | St. Luke |
| Ocean City, MD | St. Mary Star of the Sea |
| Perryville, MD | Good Shepherd |
| Pocomoke City, MD | Holy Name of Jesus |
| Port Deposit, MD | St. Teresa |
| Queenstown, MD | St. Peter |
| Ridgely, MD | St. Benedict |
| Rising Sun, MD | St. Agnes |
| Rock Hall, MD | St. John |
| St. Michaels, MD | St. Michael |
| Salisbury, MD | St. Francis de Sales |
| Secretary, MD | Our Lady of Good Counsel |
| Warwick, MD | St. Francis Xavier |
| Westover, MD | St. Elizabeth |
| Cities | Other Churches Within the Diocesan Territory (3) |
| Chesapeake City, MD |  St. Basil the Great (Ukrainian) |
| Dover AFB, DE | Our Lady of Perpetual Help |
| Wilmington, DE | St. Nicholas (Ukrainian) |
Bishop William Edward Koenig (67)
