| EMMANUEL LUTHERAN CHURCH OFWALLA WALLA, WASHINGTON | — | 601815028 | 1900-01-01 | Active | WALLA WALLA |
| ENDICOTT BIBLE CHURCH | — | 601147148 | 1900-01-01 | Active | ENDICOTT |
| ENTERPRISE LODGE NO. 2 OF THE INDEPENDENT ORDER OF ODDFELLOWS | — | 601341075 | 1900-01-01 | Dissolved | WALLA WALLA |
| EQUITABLE SAVINGS & LOAN ASSOCIATION | — | 602023714 | 1900-08-31 | Dissolved | OLYMPIA |
| EVERETT UNITED CHURCH OF CHRIST, EVERETT, WASHINGTON | — | 601142213 | 1900-01-01 | Active | EVERETT |
| FAITH COVENANT CHURCH OF SUMNER | — | 601150670 | 1900-01-01 | Active | SUMNER |
| FALL CITY LODGE NO. 59, INDEPENDENT ORDER OF ODD FELLOWS | — | 601623427 | 1900-01-01 | Inactive | |
| FARMINGTON COMMUNITY UNITED METHODIST CHURCH | — | 601143053 | 1900-01-01 | Inactive | FARMINGTON |
| FERN HILL UNITED METHODIST CHURCH | — | 601144535 | 1900-01-01 | Dissolved | TACOMA |
| FIRST BAPTIST CHURCH OF BELLINGHAM, WASHINGTON | — | 601142544 | 1900-01-01 | Active | BELLINGHAM |
| FIRST BAPTIST CHURCH OF CHEHALIS | — | 601143475 | 1900-01-01 | Active | CHEHALIS |
| FIRST BAPTIST CHURCH OF COLFAX | — | 601146162 | 1900-01-01 | Active | COLFAX |
| FIRST BAPTIST CHURCH OF DAYTON, WASHINGTON | — | 601826903 | 1900-01-01 | Active | DAYTON |
| FIRST BAPTIST CHURCH OF HOQUIAM | — | 601146108 | 1900-01-01 | Active | HOQUIAM |
| FIRST BAPTIST CHURCH OF MOUNT VERNON, WASHINGTON | — | 601142460 | 1900-09-08 | Active | MOUNT VERNON |
| FIRST BAPTIST CHURCH OF OAKESDALE | — | 601872448 | 1900-01-01 | Active | OAKESDALE |
| FIRST BAPTIST CHURCH OF PORT ANGELES | — | 601143122 | 1900-01-01 | Active | PORT ANGELES |
| FIRST BAPTIST CHURCH OF PUYALLUP | — | 601145867 | 1900-01-01 | Inactive | PUYALLUP |
| FIRST BAPTIST CHURCH OF SOUTH BEND | — | 601833654 | 1900-01-01 | Active | SOUTH BEND |
| FIRST BAPTIST CHURCH OF THE CITY OF NORTH YAKIMA | — | 601143677 | 1900-01-01 | Active | YAKIMA |
| FIRST BAPTIST CHURCH OF WENATCHEE, WASHINGTON | — | 601151147 | 1900-01-01 | Dissolved | WENATCHEE |
| FIRST CHRISTIAN CHURCH (DISCIPLES OF CHRIST) | — | 601146650 | 1900-01-01 | Active | OLYMPIA |
| FIRST CHRISTIAN CHURCH OF ELLENSBURG | — | 601143080 | 1900-01-01 | Active | ELLENSBURG |
| FIRST CHRISTIAN CHURCH OF MOUNT VERNON | — | 601146183 | 1900-01-01 | Dissolved | MOUNT VERNON |
| FIRST CHRISTIAN CHURCH OF POMEROY | — | 601847335 | 1900-01-01 | Active | POMEROY |
| FIRST CHRISTIAN CHURCH OF SEATTLE | — | 601862340 | 1900-01-01 | Inactive | |
| FIRST CHURCH OF CHRIST SCIENTIST OF EVERETT | — | 601143119 | 1900-01-01 | Dissolved | |
| FIRST CHURCH OF CHRIST, SCIENTIST | — | 601871266 | 1900-01-01 | Inactive | SNOHOMISH |
| FIRST CHURCH OF CHRIST, SCIENTIST, OF SPOKANE WASH. | — | 601146988 | 1900-01-01 | Active | SPOKANE |
| FIRST CHURCH OF CHRIST, SCIENTIST, SEATTLE | — | 601144621 | 1900-01-01 | Active | SEATTLE |
| FIRST CONGREGATIONAL CHURCH OF BELLEVUE, UCC | — | 601143153 | 1900-04-07 | Active | BELLEVUE |
| FIRST CONGREGATIONAL CHURCH OF DAYTON, WASHINGTON | — | 601808644 | 1900-01-01 | Active | DAYTON |
| FIRST CONGREGATIONAL CHURCH OF WALLA WALLA, WASHINGTON | — | 601146160 | 1900-01-01 | Active | WALLA WALLA |
| FIRST CONGREGATIONAL UNITED CHURCH OF CHRIST | — | 601142746 | 1900-01-01 | Active | COLVILLE |
| FIRST EVANGELICAL LUTHERAN CHURCH OF TACOMA | — | 601142669 | 1900-01-01 | Active | TACOMA |
| FIRST LUTHERAN CHURCH OF BOTHELL | — | 601848588 | 1900-01-01 | Active | BOTHELL |
| FIRST LUTHERAN CHURCH OF POULSBO | — | 601146192 | 1900-01-01 | Active | POULSBO |
| FIRST M. E. CHURCH OF ELLENSBURG | — | 601146587 | 1900-01-01 | Active | ELLENSBURG |
| FIRST PRESBYTERIAN CHURCH OF CLARKSTON WASHINGTON | — | 601146734 | 1900-01-01 | Active | CLARKSTON |
| FIRST PRESBYTERIAN CHURCH OF EVERSON, WASHINGTON | — | 601844331 | 1900-01-01 | Active | EDMONDS |
| FIRST PRESBYTERIAN CHURCH OF HOQUIAM | — | 601145909 | 1900-01-01 | Dissolved | HOQUIAM |
| FIRST PRESBYTERIAN CHURCH OF PUYALLUP | — | 601145902 | 1900-01-01 | Active | PUYALLUP |
| FIRST PRESBYTERIAN CHURCH OF QUILCENE | — | 601147030 | 1900-01-01 | Active | QUILCENE |
| FIRST PRESBYTERIAN CHURCH OF SPOKANE | — | 601156502 | 1900-01-01 | Active | SPOKANE |
| FIRST PRESBYTERIAN CHURCH OF TACOMA | — | 601145885 | 1900-01-01 | Active | TACOMA |
| FIRST PRESBYTERIAN CHURCH OF VANCOUVER WASHINGTON | — | 601149851 | 1900-01-01 | Active | VANCOUVER |
| FIRST SCRIPPS LEAGUE REALTY CO. | — | 601114936 | 1900-08-23 | Inactive | |
| FIRST UNITARIAN UNIVERSALIST CHURCH OF SEATTLE | — | 600520160 | 1900-01-01 | Active | DES MOINES |
| FIRST UNITED METHODIST CHURCH | — | 601144424 | 1900-01-01 | Active | DAYTON |
| FIRST UNITED METHODIST CHURCH | — | 601798809 | 1900-01-01 | Active | CENTRALIA |