Foreign Residents in Japan: Population, Distribution, and Healthcare Access

Japan is home to a substantial and growing population of foreign residents. The demographic composition of this population — where people come from, where in Japan they live, what visa status they hold, and how long they have been resident — has direct implications for the kind of health services they need and how readily they can access them.

This guide provides an overview of the foreign resident population in Japan, drawing on publicly available demographic data, and connects that picture to practical questions about healthcare access.

The scale of foreign residency in Japan

The number of registered foreign residents in Japan has grown considerably from the mid-1980s, when large-scale migration first accelerated following economic policy changes. By the early 2020s, registered foreign nationals numbered around 3 million, representing roughly 2 to 3 percent of the total population.

This proportion is lower than in many other high-income countries, but the absolute numbers are significant, and the population is growing. The rate of increase slowed during the COVID-19 pandemic years due to border restrictions but resumed thereafter.

The largest nationality groups among foreign residents have historically included Chinese nationals, South Korean nationals, Vietnamese nationals, Filipinos, and Brazilians — though the exact ranking shifts over time. Each community has a different relationship with Japan’s healthcare system depending on factors including language, cultural health practices, the nature of their visa status, and how long they have been resident.

Geographic concentration

Foreign residents are not evenly distributed across Japan. The largest concentrations are in the greater Tokyo metropolitan area, Osaka, Nagoya, and Kanagawa — reflecting the economic geography of Japan’s largest cities. Certain prefectures also have historically high concentrations tied to specific industries: Shizuoka, Aichi, and Gunma have significant populations of Brazilian-origin Nikkei workers connected to manufacturing. Okinawa has a community of US military-affiliated residents that does not show up in standard foreign registration statistics.

This geographic concentration means that health services in urban centres have had more experience developing multilingual capacity. Major urban hospitals, particularly university hospitals and those with international patient programmes, often have internal medical interpretation resources or contracts with telephone interpretation services.

Smaller municipalities — particularly rural areas that have recruited foreign workers to address labour shortages in agriculture and fisheries — may have little existing infrastructure for multilingual health communication and are actively building capacity.

Visa status and health insurance access

Foreign residents’ relationship with Japan’s health insurance system depends partly on their visa status and employment situation.

Long-term residents and permanent residents enrolled in National Health Insurance (NHI) have access to the same coverage as Japanese nationals. Residents enrolled through an employer’s workplace insurance scheme (shakai hoken) are similarly covered. Both systems require enrolment and premium payment; coverage is not automatic simply because a foreign national lives in Japan.

Short-stay visitors and certain temporary workers may not be eligible for NHI enrolment, which leaves them exposed to the full cost of medical care. This is a particular concern for undocumented residents, who may delay seeking care due to cost and concerns about identification.

The experience of seeking care

Even for foreign residents with full health insurance coverage, the experience of navigating Japan’s healthcare system can be difficult. The primary barrier is language: most clinical consultations, medical forms, prescription labels, referral letters, and discharge summaries are in Japanese. Facilities vary enormously in how much support they provide for non-Japanese-speaking patients.

Secondary barriers include unfamiliarity with the structure of the Japanese system — understanding the distinction between a clinic and a hospital, knowing when to seek emergency care versus making an appointment, and understanding what documentation to bring — and cultural differences in how illness is understood and communicated.

The prefecture-level directory on this site documents multilingual support desks and international health facilities by region. Regional international exchange associations (typically supported by prefectural governments) serve as a first point of contact for foreign residents who need to navigate health and administrative systems.

Long-term residents and chronic disease

Foreign nationals who have lived in Japan for a decade or more face the same chronic disease spectrum as Japanese nationals of similar age: lifestyle diseases, cardiovascular conditions, cancer screening needs, and age-related conditions. This population also has specific needs around continuity of medication — particularly for residents who travel frequently between Japan and their country of origin and need to manage prescription supplies and medical records across health systems.

Facilities that serve ageing long-term foreign resident populations are increasingly relevant. Some community health centres in high-concentration areas have developed services specifically for these communities.

The foreign resident population in Japan is neither monolithic nor static. Understanding its diversity — in language, country of origin, economic circumstance, visa status, and length of stay — is necessary for designing health services that actually reach the people who need them.

Last reviewed: September 2026