Atsugi's fertile land along the Sagami River fostered settlements since the Jomon period, evolving into a strategic post town on the Odawara Kaido during the Edo period, facilitating trade and travel.

The modern city of Atsugi was officially established on February 1, 1955, through the amalgamation of Atsugi Town and several surrounding villages, marking its formal urban development and expansion.

Located in central Kanagawa Prefecture, Atsugi is geographically defined by its two major rivers, the Sagami and Nakatsu, which significantly influence its landscape and historical development.

The city's topography transitions from the flat Sagamino Plateau in the east to the rolling foothills of the Tanzawa Mountains in the west, offering a varied terrain ideal for both agriculture and recreation.

With a population exceeding 220,000 residents, Atsugi is a moderately sized city in Kanagawa Prefecture, experiencing steady growth due to its convenient location and economic opportunities.

Atsugi experienced substantial population growth in the post-war era, driven by industrial expansion and its emergence as a residential satellite city for the greater Tokyo metropolitan area.

Atsugi is a major manufacturing hub, particularly known for its contributions to the automotive industry, precision machinery, and advanced electronics components.

The city is home to numerous corporate research and development centers, especially within the automotive and telecommunications sectors, establishing it as a key innovation hub in Japan.

Despite its industrial prowess, Atsugi maintains a vibrant agricultural sector producing local vegetables and fruits, alongside a growing commercial and service industry supporting its residents.

The annual Atsugi Ayu Matsuri, or Sweetfish Festival, is the city's most significant cultural event, attracting hundreds of thousands of visitors with its spectacular fireworks, traditional parades, and celebration of the local sweetfish.

Traditional local cuisine often features the sweetfish (ayu) from the Sagami River, highlighting a deep connection to its natural environment and centuries-old fishing practices.

Nanasawa Forest Park offers a vast expanse of natural beauty, including dense forests, hiking trails, and abundant wildlife, serving as a vital green lung for the city and a popular recreational spot.

Iiyama Kannon, officially Ryuhozan Iiyamaji, is a historic Buddhist temple nestled in the hills of Atsugi, known for its tranquil setting and cultural significance as a regional pilgrimage site.

Atsugi's concentration of advanced R&D facilities for major Japanese companies, such as Nissan and Sony, underscores its crucial role in driving national technological innovation and economic competitiveness.

Atsugi serves as an important transportation nexus in Kanagawa Prefecture, with major expressways like the Tomei Expressway and the Odakyu Odawara Line connecting it efficiently to Tokyo and other key regional centers.