The Canadian population of House Wren is monitored effectively by the Breeding Bird Survey (BBS), which samples most of the breeding range, is well-suited to detecting the species, and has high precision. The national trend shows substantial fluctuations over time, increasing rapidly in the late 1980s to a peak in the early 1990s, dropping back to near 1970s levels by around 2005, increasing to another peak in 2018 near 1990s levels, and then declining again more recently to close to early 1970s levels. At a regional scale, the greatest increases have been in the Maritimes, southern Ontario and Quebec, and coastal and south-central interior British Columbia, while abundance is slightly below 1970 levels only in central Ontario and Quebec, and in the central-northern parts of the Prairie provinces.

The goal for House Wren is to remain at or above its average population level from 1970 to 2022, based on the Breeding Bird Survey. Recent data show that the population is within its goal range.