Housing conditions 1-1: Changes in the City Population

The population of Yokohama City has doubled in the 40 years since the late 1950s, showing a significant increase. The subsequent growth gradually slowed, but according to the 2020 (Reiwa 2) census, it was a record high of about 3.78 million. (Fig. 1-1-1).

• Reference link[Population of Yokohama City]

Figure 1-1-1 Changes in the Population and Number of Households in Yokohama City

Materials: Ministry of Internal Affairs and Communications, “1920 (Taisho 9)-2020 (Reiwa 2) Census”

The population increase in 2020 (Reiwa 2) was 5,278.
If this is divided into social change and natural change (* 1), the social change has increased by 13,481 and the natural change has decreased by 8,203.
Looking at changes in social changes in the population, the social decline decreased from 1994 to 1995, but after 1996, it increased and increased by 23,376 in 2001 (2001). Since then, the range of the increase has been on a downward trend, but it has been on an upward trend since 2012, and in 2020 (Reiwa 2), the social increase of 13,481 people has increased.
Looking at the changes in the natural increase and decrease in the population, it turned into a natural decrease in 2016 (Heisei 2), and a natural decrease of 8,203 in 2020 (Reiwa 2). (Figure 1-1-2)

※１） The number of social increases refers to the social dynamics, which are the movements of the population associated with moving in and out for a certain period of time. The formula is "the number of social increases = the number of transfers-the number of transfers-the number of transfers-the number of transfers-the number of transfers-other changes in the Basic Resident Register, etc., ex officio changes due to the description, deletion, or amendment of resident certificate."
The natural increase is the natural dynamics that are the movements of the population associated with birth and death over a certain period of time. The formula is "Naturally additional number = number of births-number of deaths".

• Reference Materials[Changes in Social Change and Natural Increase in Population] (Excel: 36KB)

Figure 1-1-2 Changes in Social Change and Natural Increase in the City of Yokohama

Materials: Policy Bureau, Yokohama City “Demographic and Population by Age”

Looking at the total population change over the past five years, the population declines in Kanazawa Ward, Seya Ward and Asahi Ward among the 18 wards. Meanwhile, the population is growing in Kohoku Ward, Tsurumi Ward and Kanagawa Ward. (Fig. 1-1-3).

• Reference Materials[Increase in population of each ward over the past five years] (Excel: 35KB)

Figure 1-1-3 Total population change in each ward over the past five years ※From 2016 to 2020 (Reiwa 2)

Materials: Policy Bureau, Yokohama City “Demographic and Population by Age”