1931 Census of England and Wales, County Report Part I (Sample Report Title: Census 1931: England and Wales: Series of County Parts, Part I. County of Worcestershire), Table 3 : " Population, Acreage, Private Families and Dwellings".

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Acreage (Land and Inland Water)
[1]
TOTAL POPULATION
PRIVATE FAMILIES AND DWELLINGS, 1931
1921
1931
Private Families
[7]
Population in Private Families
[8]
Structurally Separate Dwellings occupied
[9]
Rooms occupied
[10]
Persons per Room
[11]
Persons
[2]
Persons
[3]
Males
[4]
Females
[5]
Persons per Acre
[6]
Cardiff RD Total   59,795 Show data context 22,726 Show data context 29,056 Show data context 13,950 Show data context 15,106 Show data context - 7,172 Show data context - 6,891 Show data context 38,712 Show data context -
Bonvilston AP/CP 1,281 Show data context 186 Show data context 195 Show data context 92 Show data context 103 Show data context - 40 Show data context - 40 Show data context 254 Show data context -
Lavernock CP/AP 650 Show data context 220 Show data context 131 Show data context 68 Show data context 63 Show data context - 29 Show data context - 28 Show data context 145 Show data context -
Lecwith CP/AP 1,010 Show data context 102 Show data context 111 Show data context 60 Show data context 51 Show data context - 26 Show data context - 23 Show data context 142 Show data context -
Lisvane AP/CP 2,761 Show data context 623 Show data context 729 Show data context 331 Show data context 398 Show data context - 159 Show data context - 156 Show data context 1,037 Show data context -
Llancarfan CP/AP 4,723 Show data context 494 Show data context 501 Show data context 265 Show data context 236 Show data context - 114 Show data context - 113 Show data context 650 Show data context -
Llanedern AP/CP 2,682 Show data context 408 Show data context 705 Show data context 321 Show data context 384 Show data context - 181 Show data context - 178 Show data context 997 Show data context -
Llanilltern CP/AP/Ch 1,075 Show data context 191 Show data context 182 Show data context 96 Show data context 86 Show data context - 46 Show data context - 42 Show data context 260 Show data context -
Llantriddyd AP/CP 1,432 Show data context 130 Show data context 125 Show data context 63 Show data context 62 Show data context - 29 Show data context - 29 Show data context 167 Show data context -
Llanfedw Hmlt/CP/AP 2,453 Show data context 227 Show data context 362 Show data context 171 Show data context 191 Show data context - 52 Show data context - 49 Show data context 238 Show data context -
Llanfeuthin AP/CP 427 Show data context 24 Show data context 35 Show data context 20 Show data context 15 Show data context - 6 Show data context - 6 Show data context 36 Show data context -
Michaelston le Pit CP/AP 1,163 Show data context 203 Show data context 292 Show data context 139 Show data context 153 Show data context - 49 Show data context - 47 Show data context 291 Show data context -
Pendeulwyn AP/CP 3,579 Show data context 413 Show data context 488 Show data context 292 Show data context 196 Show data context - 98 Show data context - 96 Show data context 535 Show data context -
Pen Marc AP/CP 3,352 Show data context 758 Show data context 804 Show data context 408 Show data context 396 Show data context - 208 Show data context - 199 Show data context 982 Show data context -
Pen Tyrch AP/CP 3,939 Show data context 2,440 Show data context 2,267 Show data context 1,138 Show data context 1,129 Show data context - 583 Show data context - 579 Show data context 2,908 Show data context -
Peterston super Ely AP/CP 2,171 Show data context 416 Show data context 390 Show data context 191 Show data context 199 Show data context - 92 Show data context - 89 Show data context 542 Show data context -
Porthceri AP/CP 965 Show data context 398 Show data context 517 Show data context 270 Show data context 247 Show data context - 127 Show data context - 118 Show data context 636 Show data context -
Radur CP/AP 1,630 Show data context 1,364 Show data context 1,596 Show data context 724 Show data context 872 Show data context - 401 Show data context - 385 Show data context 2,392 Show data context -
Rhyd Y Gwern CP/Hmlt 722 Show data context 237 Show data context 218 Show data context 113 Show data context 105 Show data context - 53 Show data context - 51 Show data context 254 Show data context -
Rhydri AP/CP 2,668 Show data context 605 Show data context 572 Show data context 304 Show data context 268 Show data context - 129 Show data context - 123 Show data context 633 Show data context -
St Andrews Major CP/AP 3,186 Show data context 2,529 Show data context 2,854 Show data context 1,380 Show data context 1,474 Show data context - 720 Show data context - 676 Show data context 4,169 Show data context -
St Brides super Ely AP/CP 601 Show data context 139 Show data context 118 Show data context 58 Show data context 60 Show data context - 26 Show data context - 26 Show data context 156 Show data context -
St Fagans CP/AP 2,308 Show data context 511 Show data context 477 Show data context 240 Show data context 237 Show data context - 115 Show data context - 114 Show data context 664 Show data context -
St George super Ely CP/AP 1,024 Show data context 300 Show data context 281 Show data context 146 Show data context 135 Show data context - 65 Show data context - 65 Show data context 367 Show data context -
St Lythans AP/CP 1,283 Show data context 94 Show data context 82 Show data context 44 Show data context 38 Show data context - 18 Show data context - 17 Show data context 104 Show data context -
St Nicholas CP/AP 2,172 Show data context 407 Show data context 351 Show data context 172 Show data context 179 Show data context - 86 Show data context - 86 Show data context 613 Show data context -
Sully AP/CP 1,012 Show data context 576 Show data context 716 Show data context 325 Show data context 391 Show data context - 177 Show data context - 170 Show data context 869 Show data context -
Van AP/CP/Hmlt 862 Show data context 501 Show data context 457 Show data context 243 Show data context 214 Show data context - 100 Show data context - 90 Show data context 469 Show data context -
Welsh St Donats AP/CP 2,264 Show data context 213 Show data context 207 Show data context 106 Show data context 101 Show data context - 50 Show data context - 48 Show data context 238 Show data context -
Wenvoe AP/CP 3,441 Show data context 495 Show data context 560 Show data context 274 Show data context 286 Show data context - 122 Show data context - 122 Show data context 679 Show data context -
Whitchurch CP/AP 2,959 Show data context 7,522 Show data context 12,733 Show data context 5,896 Show data context 6,837 Show data context - 3,271 Show data context - 3,126 Show data context 17,285 Show data context -

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Using data from this table, Vision of Britain can map the following rates for within Cardiff RD:

Rate Date
Population Density (Persons per Acre) 1931
Rate of Population Change (% over previous 10 years) 1931

Notes:

The following notes to the table appeared in the original report.

1 The figures for Wards are printed in old face type (e.g. 607) and those for Civil Parishes, where different from Wards, in modern face type (e.g. 607).
2 DEFINITIONS: PRIVATE FAMILY. -- Any person or group of persons included in a separate return as being in separate occupation of any premises or part of premises is treated as a separate family for Census purposes, lodgers being so treated when returned as boarding separately and not otherwise. Private families comprise all such families with the exception of those enumerated in (i) Institutions or (ii) business establishments or boarding houses in which the number of resident trade assistants or resident boarders exceeds the number of members of the employer's or householders family (including private domestic servants).
3 DEFINITIONS: STRUCTURALLY SEPARATE DWELLINGS. -- A structurally separate dwelling has been defined for the Census as any room or set of rooms, intended or used for habitation, having separate access either to the street or to a common landing or staircase. Thus each flat in a block of flats is a separate unit; a private house which has not been structurally subdivided is similarly a single unit whether occupied by one family or by several families. But where a private house has been subdivided into maisonettes or portions, each having its front door opening on to the street or on to a common landing or staircase to which visitors have access, then each such portion is treated as a separate unit.
4 DEFINITIONS: ROOMS. -- For the purposes of the Census, the rooms enumerated are the usual living rooms, including bedrooms and kitchens but excluding sculleries, landings, lobbies, closets, bathrooms, or any warehouse, office, or shop rooms.
5 Areas marked (*) have been created or altered during the 1921-1931 intercensal period; for particulars of such creations or alterations (except those relating to Wards), see Table 4.

This website does not try to provide an exact replica of the original printed census tables, which often had thousands of rows and far more columns than will fit on our web pages. Instead, we let you drill down from national totals to the most detailed data available. The column headings are those that appeared in the original printed report. The numbers presented here, which are the same ones we use to create statistical maps and graphs, come from the census table and have usually been carefully checked.

The system can only hold statistics for units listed in our administrative gazetteer, so some rows from the original table may be missing. Sometimes big low-level units, like urban parishes, were divided between more than one higher-level units, like Registration sub-Districts. This is why some pages will give a higher figure for a lower-level unit: it covers the whole of the lower-level unit, not just the part within the current higher-level unit.