Otjimbingwe's rise began with geography. The settlement sat at the junction of the Omusema and Swakop rivers, along the Old Bay Road — an ox wagon track built by Jonker Afrikaner in the 1840s that connected Windhoek to the port of Walvis Bay. Every trader, missionary, and mercenary heading inland passed through. The Rhenish Mission Society established a station here in 1849, when Johannes Rath and his family arrived on 11 July. Within five years, copper was discovered in the nearby Khomas highlands, and the Walwich Bay Mining Company set up offices in town. Miners and merchants poured in. The Swedish-born explorer and businessman Karl Johan Andersson made Otjimbingwe his trading headquarters and in 1860 bought the entire settlement outright. He sold it to the Rhenish missionaries five years later, by which time the copper had been exhausted and the mining boom was already fading.

Otjimbingwe was more than a commercial hub — it became the birthplace of Herero political unity. In the 1860s, the Herero people faced relentless attacks from the Nama and their Oorlam allies. On 15 June 1863, representatives from most Herero communities gathered in Otjimbingwe to unify for war, while King Zeraua dispatched a delegation to Walvis Bay to acquire weapons. That same year, the Battle of Otjimbinge erupted — one of the largest engagements of the Herero-Nama War, pitting Andersson and the Herero against the Oorlam under Christian Afrikaner. By 1867, the gathered communities had agreed to establish the position of paramount chief, a leadership structure that endures to this day. Herero paramount chieftain elections still take place at Otjimbingwe, hosted by the Ovaherero Traditional Authority, making this quiet settlement an ongoing seat of cultural governance.

As the Rhenish Mission Society expanded, Otjimbingwe became their central hub in Namibia. The Augustineum, a seminary and teacher training college founded by Hahn in 1866, was one of the earliest schools in all of South West Africa. When the territory became the German colony of German South West Africa, Otjimbingwe served as the de facto capital, its mix of mission infrastructure, trading networks, and Herero political authority giving it an outsized importance for a settlement in the arid interior. But the forces that built Otjimbingwe were already shifting. The Augustineum relocated to Okahandja. The German administration chose Windhoek as its seat in 1892. Theological education returned briefly with the United Lutheran Theological Seminary — Paulinum, which operated from 1963 to 1997 — but the town never recovered its former centrality.

The final blow came in 1900, when the railway connecting Swakopmund to Windhoek was completed — and its route ran nowhere near Otjimbingwe. In an era when rail meant everything, being left off the line was a slow death sentence for a settlement built on overland trade. The population shrank. Commerce moved to towns the trains actually reached. Today Otjimbingwe is home to more Damara and Khoekhoe speakers than Herero, a demographic reminder that the Herero migration was itself an episode in a longer history. The Rhenish church in the settlement's centre, constructed in 1867 and proclaimed a National Monument in 1974, stands as one of Namibia's oldest churches — and as testimony to an era when this unassuming spot beside the Swakop was the contested heart of a territory. Even the local scorpion species, Uroplectes otjimbinguensis, bears the settlement's name, its type specimen collected from the surrounding landscape.