I am working on an interactive map of the Costa Chica region. Currently, it is under the Costa Chica tab, but it might get its own tab in the future. The red dots signify towns that I know to be have significant black population OR have a strong black heritage even though the number of blacks may have diminished in recent decades. Clicking on the red do reveals the name of the town and the population.
If there are any other features you would like to see on the map, let me know. This is a work in progress.