This municipality has experienced contour changes since 2013 :
01/01/2019 – La Roche-Derrien devient commune déléguée (chef-lieu) au sein de La Roche-Jaudy
(22264) (commune nouvelle).
01/01/2019 – Création de la commune nouvelle de La Roche-Jaudy en lieu et place des
communes de Hengoat (22078), de Pommerit-Jaudy (22247), de Pouldouran (22253) et de
La Roche-Derrien (22264) devenues déléguées.
In the case of a merger, when the geography of the source indicated under the table
/ graph is after the date of the merger, the data correspond to those of the new municipality.
tableauLOG T1 - Growth estimates of the number of housings by category since 1968
LOG T1 - Growth estimates of the number of housings by category since 1968
Housing category
1968(*)
1975(*)
1982
1990
1999
2006
2011
2016
2022
Altogether
988
1 018
1 118
1 195
1 294
1 382
1 484
1 550
1 553
Principal residences
867
868
888
910
1 017
1 108
1 155
1 180
1 266
Second dwellings and occasional dwellings
64
81
107
183
201
197
211
184
207
Vacant accommodations
57
69
123
102
76
78
119
187
80
(*) 1967 and 1974 for the overseas departments
Sources : Insee, RP1967 to RP1999 counts, RP2006 to RP2022 main holdings.
tableauLOG T1bis - Categories of housings
LOG T1bis - Categories of housings
Category of housing
2011
2016
2022
Principal residences
77,8
76,1
81,5
Second dwellings and occasional dwellings
14,2
11,8
13,3
Vacant dwellings
8,0
12,1
5,2
Sources : Insee, RP2011, RP2016 and RP2022, main operations, geography as of 01/01/2025.
tableauLOG T2 - Types of housings
LOG T2 - Types of housings
Type of housing
2011
%
2016
%
2022
%
Altogether
1 484
100,0
1 550
100,0
1 553
100,0
Houses
1 305
87,9
1 396
90,0
1 397
90,0
Flats
164
11,0
148
9,6
150
9,7
Others
16
1,1
6
0,4
6
0,4
Sources : Insee, RP2011, RP2016 et RP2022, exploitations principales, géographie au
01/01/2025.
tableauLOG T2bis - Contributions to the change in the number of principal residences
LOG T2bis - Contributions to the change in the number of principal residences
Contributions
2011-2016
%
2016-2022
%
Total change
25
1,7
86
5,6
due to the household size effect
–49
–3,3
92
6,0
due to the demographic effect
74
5,0
–6
–0,4
Note: The change in the number of households (and therefore in the number of main
residences) can be broken down into two effects: the "household size effect" and the
"demographic effect."
Indeed, a decrease in average household size leads to an increased housing need, even
if the population remains stable. The remaining part of the change is referred to
as the demographic effect.
These effects can be either positive or negative.
Sources : Insee, RP2011, RP2016 et RP2022, exploitations principales, géographie au
01/01/2025.
tableauLOG T3 - Principal residences by number of rooms
LOG T3 - Principal residences by number of rooms
Number of rooms
2011
%
2016
%
2022
%
Altogether
1 155
100,0
1 180
100,0
1 266
100,0
1 room
21
1,8
18
1,5
12
0,9
2 rooms
112
9,7
109
9,2
114
9,0
3 rooms
242
20,9
202
17,1
214
16,9
4 rooms
243
21,0
277
23,5
281
22,2
5 rooms or above
537
46,5
573
48,6
645
50,9
Sources : Insee, RP2011, RP2016 and RP2022, main operations, geography as of 01/01/2025.
tableauLOG T4 - Principal residences average number of rooms
LOG T4 - Principal residences average number of rooms
Type of main residence
2011
2016
2022
All main residences
4,4
4,6
4,6
House
4,7
4,8
4,8
Flat
2,8
2,8
2,7
Sources : Insee, RP2011, RP2016 and RP2022, main operations, geography as of 01/01/2025.
tableauLOG T4bis - Dwelling occupancy index
LOG T4bis - Dwelling occupancy index
Occupancy index
2011
2016
2022
Standard occupancy
16,8
13,1
9,5
Moderate over-occupation
3,4
3,0
2,8
Severe over-occupation
0,0
0,9
0,0
Moderate under-occupation
25,4
22,3
25,0
Severe under-occupation
21,7
19,2
22,2
Very severe under-occupation
32,7
41,4
40,5
Sources : Insee, RP2011, RP2016 and RP2022, main operations, geography as of 01/01/2025.
tableauLOG T5 - Principal residences in 2022 by completion period
LOG T5 - Principal residences in 2022 by completion period
Completion period
Number
%
Principal residences build before 2020
1 249
100,0
Before 1919
328
26,3
From 1919 to 1945
134
10,7
From 1946 to 1970
193
15,5
From 1971 to 1990
264
21,1
From 1991 to 2005
141
11,3
From 2006 to 2019
189
15,1
Source : Insee, RP2022 main operation, geography as of 01/01/2025.
