As of 2026, Tokyo remains the city with the largest population of foreign residents in Japan by a significant margin. Specifically, the Shinjuku and Edogawa wards host the highest concentrations of international communities, with Shinjuku often cited as the most diverse area in the country. Approximately 1 in 10 residents in central Tokyo is now a foreign national, reflecting Japan's recent shifts in labor and residency policies to attract international talent. Following Tokyo, the city of Osaka has the second-highest number, particularly in the Ikuno ward, which has a long-standing and vibrant Zainichi Korean community. Other notable hubs for foreigners include Yokohama and Nagoya, which attract many residents due to their proximity to major manufacturing and shipping industries. This demographic shift has led to an increase in multilingual signage and services across these urban centers, making them the most accessible parts of Japan for non-Japanese speakers.