This chapter investigates sociolinguistic coherence and differentiation in Namibian German (“Namdeutsch”), based on corpus data and a copy-editing task. The Namdeutsch speech community draws on a local Namibian identity as well as an ethnic German identity. At the linguistic level, this leads to a tension between a tendency for Namdeutsch to develop distinctive local features on the one hand and to remain close to standard German in Germany on the other hand, and this can interact with register distinctions. Data from the DNam corpus of German in Namibia shows that noncanonical local variants are primarily associated with informal registers but that some are also used in formal language. We hypothesised that variants with weaker overt reflexes, in particular, which we assumed to be of lower social salience, can enter formal registers. This was confirmed in a copy-editing task where Namdeutsch speakers were asked to correct a newspaper article. Taken together, our findings point to a broader Namdeutsch dialect that encompasses informal and formal settings in an orderly heterogeneity that is modulated by social meaning linked to local and ethnic identities and a hierarchy of sociolinguistic salience reflecting the overt manifestation of linguistic variables.