The Church, with her faiths, her sacraments, and a part of her ministry, was an integral part of the colonization of the County from the beginning and continuously. Everywhere, with the spreading population, substantial edifices for public worship were erected and competent provision made for the maintenance of all the decencies and proprieties of Christian religion. The influence of these institutions, and of the faith which they embodied, was most benign and salutary. They gave to the age of the Revolution its noble character and its deep-seated principles, the force and momentum of which have come down, with gradually decreasing power, to our own day. But with these institutions and with their proper effect and influence was mingled the fatal leaven of secularity.
All the leading denominations are represented in Loudoun by churches and congregations to the extent shown by the following table of statistics, representing conditions as they existed at the close of the calendar year 1906, and based upon the returns of individual church organizations so far as received by the Census Office, through which Bureau they were obtained for initial publication in this work.
| Denomination. | Total number of organizations. | Communicants or members. |
| Total number reported. | ||
| All denominations | 97 | 7,606 |
| Baptist bodies: | ||
| Baptists— | ||
| Southern Baptist Convention | 11 | 1,199 |
| National Baptist Convention (colored) | 15 | 1,235 |
| Free Baptists | 2 | 55 |
| Primitive Baptists | 6 | 171 |
| Friends: | ||
| Society of Friends (Orthodox) | 2 | 122 |
| Religious Society of Friends (Hicksite) | 3 | 278 |
| Lutheran bodies: | ||
| General Synod of the Evangelical Lutheran Church in the United States of America | 4 | 645 |
| Methodist bodies:[17] | ||
| Methodist Episcopal Church | 19 | 1,179 |
| Methodist Episcopal Church (South) | 21 | 1,716 |
| Colored Methodist Episcopal Church | 1 | 45 |
| Presbyterian bodies: | ||
| Presbyterian Church in the United States (South) | 4 | 345 |
| Protestant Episcopal Church | 7 | 416 |
| Reformed bodies: | ||
| Reformed Church in the United States | 1 | 140 |
| Roman Catholic Church | 1 | 60 |
[17] Leesburg had, until a year or so ago when it was razed, one of the oldest Methodist churches in America. The building, a large stone structure, long abandoned, with galleries around three sides, stood in the midst of an old Methodist graveyard in which are tombstones more than a century old. It was built, according to report, in 1780.
Leesburg is the oldest Methodist territory in the bounds of the Baltimore Conference in Virginia, and it was here that the first Methodist Conference held in the State convened May 19, 1778.