Ministry of Internal Affairs and Communications Statistics Bureau
  • Inquiry
  • Sitemap
  • Japanese

Main contents start here

Population Census

4. Household

The number of households was 49,566,305, increased of 5.3% from 2000.

- The number of households was 49,566,305, increased of 2,503,562, or 5.3%, compared with 2000.

- The number of private households was 49,062,530, increased of 2,280,147, or 4.9%, compared with 2000. The number of institutional households was 100,299, decreased of 1,329, or 1.3%, compare with 2000.

  See the "Explanation of terms" to learn the difinition of household.

The number of one-person and two-person households had markedly increased, while the member per household had decreased to 2.55 persons.

- As for the increase rate of the number of private households by size of household in 2000-2005, one-person households had increased by 12.0%, two-person households by 10.9% and three-person households by 4.4%, while four and more person households had decreased. In addition, members per household had decreased from 2.67 in 2000 to 2.55 in 2005. (Fig. 7)

Figure 7 Ratio of Households by Size of Household - Japan (2000, 2005) 

Households consisting of "a married couple only" had increased, while those consisting of "a married couple with their child(ren)" had decreased.

- As for the private households by family type of household, 28,393,707 were family nuclei (57.9% of the total number of private households), increased of 3.9% from 2000. Among family nuclei, 9,636,533 (19.6%) households consisting of "a married couple only", increased of 9.1% from 2000, and 14,645,655 (29.9%) consisting of "a married couple with their child(ren)", decreased of 1.8% compared with 2000. (Fig. 8)

- Among private households, 14,457 (29.5%) were one-person households, increased of 12.0% from 2000.

Figure 8 Changes in the Number of Private Households by Family Type of Household - Japan (1995-2005)

Aged-single-persons were 3.86 million, increased of 27.5% from 2000. Aged-couple households were 4.49 million, increased of 22.6%. 

  Note: See the "Explanation of terms" to learn the difinition of aged-single-persons and aged-couple households. 

- The number of private households with related members aged 65 years old and over was 17,204,473, which accounted for 35.1% of the total private households, increased 2,159,865 households, or 14.4% from 2000. Family nuclei was 8,414,948, which accounted for 48.9% of the private households with related members aged 65 years old and over, increased 23.8% from 2000. In addition, the number of aged-single-persons markedly increased by 27.5% to 3,864,778 (22.5%). The ratio of aged-single-persons to the population aged 65 years old and over had risen from 13.8% in 2000 to 15.1% in 2005.

- The number of family nuclei and "aged-single-persons" was rapidly increasing in private households with related members aged 65 years old and over. (Figs 9 and 10)

Figure 9 Changes in the Number of Private Households with Related Members Aged 65 Years Old and Over - Japan (1995-2005) 

- The male aged-single-persons were 1,051,207, the female were 2,813,571 which were 2.7 times to male. The ratio of "aged-single-persons" to the population of those aged 65 years old and over was 9.7% for male and 19.0% for female, indicating the fact that one out of 10 male and one out of 5 female were living alone.

- There were 4,487,042 aged-couple households, accounting for 26.1% of the private households with related members aged 65 years old and over. The number of aged-couple households had increased by 825,771, or 22.6%, from 2000. (Fig. 10)

Figure 10 Changes in the Number of Aged-Single-Persons and Aged-Couple Households - Japan (1990-2005)

- The ratio of private households with related members aged 65 years old and over was highest in Yamagata-ken at 51.7%, followed by Akita-ken at 51.2% and Shimane-ken at 49.6%. In contrast, the ratio was lowest in Tokyo-to at 28.0%, followed by Kanagawa-ken at 28.4% and Okinawa-ken at 29.8%. (Fig. 11)

- The ratio of aged-single-persons to the population of those aged 65 years old and over was highest in Kagoshima-ken at 22.2%, followed by Tokyo-to at 21.7% and Osaka-fu at 20.9%. In contrast, the ratio was lowest in Yamagata-ken at 8.1%, followed by Niigata-ken at 9.2% and Fukui-ken at 9.7%.

- The ratio of aged-couple households to private households with related members aged 65 years old and over was highest in Hokkaido at 33.3%, followed by Kagoshima-ken at 33.2% and Miyazaki-ken at 30.9%. The ratio was lowest in Yamagata-ken at 16.6%, followed by Niigata-ken at 19.4% and Fukushima-ken at 19.5%.

Figure 11 Ratio of the Private Households with Related Members Aged 65 Years Old and Over - 2005 

← 3. Marital status

5. Housing →

back home

Top of this page