| Title | Name | Address(es) | Estates |
|---|
| Countess | Aylesford,Countessof, | 7 | Audley-square | | | Stanmore,Middlesex |
| Countess | Rosslyn,Countess of, | 3 | Bolton-street | | | |
| Countess | Antrim,Countess of, | 25 | Bruton-street | | | Antrim, Ireland |
| Countess | Stanhope,Countess, | 11 | Clarges-street | | | |
| Countess | Egremont,Countess of, | 21 | Dover-street | | | |
| Countess | Suffolk,Countess of, | 12 | Duke-street,Westminster | | | |
| Countess | Westmeath,Countess, | 20 | George-street,Portman-square | | | |
| Countess | Mengden,Countess of, | 93 | Gloucester-place | | | |
| Countess | Castlestewart,Countess, | 80 | Gloucester-place,Portman-square | | | |
| Countess | Mornington,Countessof, | 5 | Henrietta-street,Cavendish-square | | | Hampton-court-palace |
| Countess | Hompesch,Countess, | 14 | King-street,Portman-square | | | |
| Countess | Carnarvon,Countessof, | 28 | Lower-Grosvenor-street | | | |
| Countess | Normanton,Countess, | 13 | Montague-square | | | |
| Countess | Gosford,Countessof, | 36 | Montague-square | | | |
| Countess | Guilford,Countess, | 77 | Piccadilly | | | |
| Countess | Pomfret,Countess, | 21 | Portman-street | | | |
| Countess | Clare,Countess of, | 15 | Saville-row | | | Mount Shannon,County of Limerick, Ireland |
| Countess | Berkeley,Countessof, | 6 | Spring-gardens | | | Cranford-lodge,near Hounslow, Middlesex |
| Countess | De Grey,Countess, | 4 | St.James's-square | | | Wresthouse, Silsoe, Bedfordshire.. Putney-heath,Surrey |
| Countess | Beauchamp,Countess, | 12 | St.James's-square | | | |
| Countess | Fauconberg,Countess, | 14 | Welbeck-street | | | |
| Countess | Bentinck Countess, | 16 | Welbeck-street | | | |
