Registration districts were originally created for the registration of births, marriages and deaths, rather than specifically for the census. In many cases, registration districts were broadly equivalent to parishes, but not necessarily so.
| Surname | Total | Frequency | Index |
| MARTIN | 184 | 1.2310 | 5.00 |
| SMITH | 163 | 1.0905 | 0.77 |
| JOHNSON | 87 | 0.5821 | 1.73 |
| ALLEN | 87 | 0.5821 | 3.08 |
| BROWN | 86 | 0.5754 | 0.87 |
| TAYLOR | 84 | 0.5620 | 0.88 |
| JONES | 76 | 0.5085 | 0.45 |
| WOOD | 73 | 0.4884 | 1.53 |
| COOPER | 67 | 0.4483 | 1.84 |
| WILLIAMS | 65 | 0.4349 | 0.61 |
| WHITE | 61 | 0.4081 | 1.27 |
| MARSHALL | 57 | 0.3813 | 2.27 |
| RUSSELL | 56 | 0.3747 | 3.07 |
| THOMAS | 55 | 0.3680 | 0.89 |
| READER | 49 | 0.3278 | 37.98 |
| EVANS | 48 | 0.3211 | 0.73 |
| WHITEHEAD | 45 | 0.3011 | 4.45 |
| HOLLAND | 45 | 0.3011 | 4.23 |
| PAYNE | 44 | 0.2944 | 3.27 |
| HUGHES | 44 | 0.2944 | 1.05 |
| COLE | 43 | 0.2877 | 3.16 |
| GARDNER | 43 | 0.2877 | 4.24 |
| CLARK | 43 | 0.2877 | 0.96 |
| STEVENS | 43 | 0.2877 | 2.76 |
| WATKINS | 43 | 0.2877 | 4.75 |
| WALKER | 42 | 0.2810 | 0.84 |
| TURNER | 42 | 0.2810 | 1.01 |
| WRIGHT | 41 | 0.2743 | 0.86 |
| HAMMOND | 41 | 0.2743 | 4.82 |
| NEWMAN | 40 | 0.2676 | 3.60 |
| MITCHELL | 40 | 0.2676 | 1.32 |
| MASON | 39 | 0.2609 | 1.94 |
| GREEN | 39 | 0.2609 | 0.93 |
| WEST | 39 | 0.2609 | 2.71 |
| WILSON | 39 | 0.2609 | 0.57 |
| WARNER | 39 | 0.2609 | 7.16 |
| COOK | 38 | 0.2542 | 1.28 |
| THOMPSON | 37 | 0.2475 | 0.83 |
| LUKES | 37 | 0.2475 | 307.56 |
| BAKER | 37 | 0.2475 | 1.13 |
| WATERS | 37 | 0.2475 | 6.16 |
| KING | 37 | 0.2475 | 1.14 |
| ROBINSON | 37 | 0.2475 | 0.78 |
| SCOTT | 37 | 0.2475 | 0.98 |
| ELLIOTT | 36 | 0.2409 | 2.84 |
| BOWEN | 35 | 0.2342 | 5.66 |
| HOPPER | 35 | 0.2342 | 16.39 |
| HEATH | 34 | 0.2275 | 4.58 |
| JACKSON | 34 | 0.2275 | 0.81 |
| EDWARDS | 33 | 0.2208 | 0.79 |
| Surname | Index | Total | Frequency |
| BROWNFIELD | 14.95 | 14,947 | 449.4382 |
| LUKES | 14.95 | 14,947 | 307.5644 |
| CONSTANT | 14.95 | 14,947 | 160.3206 |
| CACKETT | 14.95 | 14,947 | 132.4503 |
| TOULSON | 14.95 | 14,947 | 127.0772 |
| MACKLEY | 14.95 | 14,947 | 69.3842 |
| RELPH | 14.95 | 14,947 | 64.0000 |
| HOLDERNESS | 14.95 | 14,947 | 57.5816 |
| COLYER | 14.95 | 14,947 | 54.0819 |
| POYNTER | 14.95 | 14,947 | 52.8936 |
| LOFT | 14.95 | 14,947 | 39.2362 |
| READER | 14.95 | 14,947 | 37.9786 |
| WHITBREAD | 14.95 | 14,947 | 36.8571 |
| JURY | 14.95 | 14,947 | 33.2917 |
| BEALES | 14.95 | 14,947 | 31.4268 |
| SANDFORD | 14.95 | 14,947 | 27.2531 |
| EVES | 14.95 | 14,947 | 27.2044 |
| RAND | 14.95 | 14,947 | 25.6893 |
| HOLLANDS | 14.95 | 14,947 | 23.1184 |
| FOTHERGILL | 14.95 | 14,947 | 22.1704 |
| MEE | 14.95 | 14,947 | 19.3577 |
| TUNSTALL | 14.95 | 14,947 | 18.9012 |
| ASHDOWN | 14.95 | 14,947 | 18.8902 |
| MUNN | 14.95 | 14,947 | 18.5684 |
| IVES | 14.95 | 14,947 | 17.1292 |
| HOPPER | 14.95 | 14,947 | 16.3919 |
| WALDEN | 14.95 | 14,947 | 14.6185 |
| HOOKER | 14.95 | 14,947 | 13.3052 |
| AMBROSE | 14.95 | 14,947 | 12.9120 |
| BOWIE | 14.95 | 14,947 | 12.2869 |
| STRANGE | 14.95 | 14,947 | 9.3569 |
| MILTON | 14.95 | 14,947 | 9.2220 |
| DENTON | 14.95 | 14,947 | 9.1022 |
| BROAD | 14.95 | 14,947 | 8.9469 |
| FRIEND | 14.95 | 14,947 | 8.8522 |
| PATTISON | 14.95 | 14,947 | 7.9876 |
| DAWES | 14.95 | 14,947 | 7.3717 |
| CLIFFORD | 14.95 | 14,947 | 7.1591 |
| WARNER | 14.95 | 14,947 | 7.1564 |
| BEER | 14.95 | 14,947 | 6.6884 |
| WATERS | 14.95 | 14,947 | 6.1608 |
| DRIVER | 14.95 | 14,947 | 6.1383 |
| BOWEN | 14.95 | 14,947 | 5.6631 |
| SWIFT | 14.95 | 14,947 | 5.6323 |
| RAMSAY | 14.95 | 14,947 | 5.4551 |
| MARTIN | 14.95 | 14,947 | 4.9972 |
| CHURCH | 14.95 | 14,947 | 4.9063 |
| HAMMOND | 14.95 | 14,947 | 4.8180 |
| WATKINS | 14.95 | 14,947 | 4.7473 |
| HEATH | 14.95 | 14,947 | 4.5812 |
The Total column shows the total number of people in that county or town with this surname. For example, there were 14,947 people called BROWNFIELD in Milton In Gravesend at the time of the 1881 census.
The Frequency column shows the percentage of people in this county or town with this surname. For example, a frequency of 449.4382 in Milton In Gravesend means that 449.4382% of the people in Milton In Gravesend on census day were called BROWNFIELD.
The Index column shows the relative probability of finding someone called BROWNFIELD in this county or town, compared with the probability of finding them anywhere in Britain as a whole. An index of 1 means that if you pick someone at random from this county or town, you have exactly the same probability of picking someone called BROWNFIELD as if you picked at random from the whole of the UK. Where the index is higher than 1, then you are more likely to find someone called BROWNFIELD here than if you picked from the UK as a whole, and where it's lower then you are less likely. The actual figure shows the level of probability - for example, a figure of 2 would indicate that you are twice as likely to find someone called BROWNFIELD here than in the UK as a whole, and 10 would make it ten times as likely. The value of 14.95 in Milton In Gravesend means that you are 14.95 times as likely to find someone with the surname of BROWNFIELD in Milton In Gravesend than you would be in the whole of the UK.
(including typos, unknowns and the ones we don't have any data for!)