The best source of information on the population status of Tennessee Warbler in Canada is the Breeding Bird Survey (BBS), although the northernmost portion of its range is poorly covered, reducing the overall reliability of the BBS to moderate. BBS data indicate a long-term trend of little change at the national level, however there is regional variation in population trends. Among regional trends with at least medium reliability, large declines have occurred in Atlantic Canada and central Ontario and Quebec, and a moderate increase has occurred in the northern Rockies. Other regions have seen little change, consistent with the national trend.

The goal for Tennessee Warbler 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.