Maintaining jaguar Panthera onca subpopulations throughoutMesoamerica is vital to range-wide jaguar conservation. Corcovado National Parkin Costa Rica is critical habitat for the Osa Peninsula jaguar subpopulation.There is a debate regarding whether the jaguars in this National Park are in astate of crisis. To examine this, we implemented long-term camera-trapmonitoring throughout Corcovado National Park during 2015–2021. Using aspatially explicit Jolly–Seber model we estimated jaguar populations anddistribution throughout our study area. Additionally, we reran our model using aconstrained study area to compare our findings with those of a previous study.Trends in jaguar abundance indices and population estimates during2015–2021 indicate that jaguar abundance has increased over time. Ourjaguar density estimates also fall within the range of jaguar densities reportedfor relatively stable populations elsewhere. Using the same study area as thatof a prior study, jaguar densities also increased over the duration of our studyand were mostly comparable to previous density estimates. Our results suggestthat jaguars within Corcovado National Park may not be in a state of crisis.Rather, our findings provide further hope for the jaguars of the Osa Peninsula.They do not, however, diminish the importance of continued conservation efforts.These will remain critical both inside and outside Corcovado National Park, asthreats appear to have persisted over time.