The best source of information on the population status of Common Yellowthroat in Canada is the Breeding Bird Survey (BBS). Although the BBS trend estimates have high precision, overall reliability is only considered medium because the northernmost portion of its range has limited coverage. The national BBS trend shows some fluctuations over time, but overall a long-term trend of little change. At a regional scale, long-term changes are apparent only in central British Columbia, the Prairies, and southern Ontario, which have shown moderate increases, and in central Ontario and Quebec, where there have been moderate decreases.

The goal for Common Yellowthroat is to maintain its population at or above the level it was at in the early 1970s, based on the Breeding Bird Survey. Recent data show that the population is within its goal range.