The British North Borneo Chartered Company established the settlement in 1898, accelerating growth by encouraging Chinese immigration. Japanese businessmen followed, building rubber and coconut plantations that shaped the local economy for decades. Then came the war. Allied bombing in mid-1944 razed Tawau to the ground. After Japan's surrender in 1945, 2,900 Japanese soldiers were transferred to Jesselton as prisoners of war, and the town began the slow work of reconstruction. By the end of 1947, the economy had recovered to its pre-war level - a testament to the stubbornness of a trading town on a strategic coastline. The Indonesian Confrontation of the 1960s brought a new threat: Gurkhas were stationed in Tawau, Australian destroyer escorts patrolled Cowie Bay, and F-86 Sabres flew daily from Labuan.

Tawau's claim to agricultural fame rests on cocoa. The surrounding district once ranked among the world's top producing regions, alongside the Ivory Coast, Ghana, and Indonesia. The plantations spread through the interior north of the town, concentrated in the rich volcanic soils that also support oil palm and timber. The Tawau Barter Trade Association, established in 1993, formalized a cash-based cross-border trade in raw materials with East Kalimantan, though in recent years timber has dominated. Forty timber-processing plants and numerous sawmills were operating as of the 1990s. Tawau Port serves as the major gateway for both exports and imports, with Indonesian goods crossing the Celebes Sea as they have for over a century.

Tawau's population reflects its history as a crossroads. The Chartered Company's immigration policies brought Chinese settlers. Japanese planters arrived under the Anglo-Japanese Alliance. Indonesian and Filipino traders and laborers crossed the nearby borders. The indigenous peoples - Murut, Tidong, and others - were here before any of them. Indonesia maintains a consulate in Tawau, a reflection of the deep economic and family connections that span the maritime border. The town has twin-city arrangements with Zhangping in China and Pare-Pare in Indonesia, formalizing ties that were informal long before any agreement was signed. Six members of the Sabah State Legislative Assembly represent the surrounding districts, and two members of parliament cover Tawau and Kalabakan constituencies.

Tawau Airport connects the town to Kota Kinabalu and Kuala Lumpur, and the Pan Borneo Highway links it by road through Semporna, Lahad Datu, and onward to Sandakan. For most visitors, Tawau is a gateway - to the dive sites of Semporna and Sipadan, to the volcanic hills of Tawau Hills Park, or across the border to Indonesian Kalimantan. The town itself sprawls along Cowie Bay, its streets radiating from the old Bell Tower benchmark. Congestion is chronic; the city's growth has outpaced its public transit. But the trading energy that drew the first British ship into the harbor persists in the morning markets, the port traffic, and the border trade that defines a town built at the meeting point of nations, seas, and histories.