Insight Vs Insights

It's similar to the difference between perspective and perspectives. If you say someone has perspective, that's saying that he generally is able to look at things from a good point of view. However, if you talk about someone who shares a lot of perspectives, then you're talking about multiple specific points of view.

Likewise, someone who has insight has the general ability to understand the nature of things. Take this example sentence from Merriam-Webster:

He is a leader of great insight.

This sentence is saying that the leader has an impressive ability to understand things; this is a general insight. M-W also gives an example sentence with insights:

Her book provides us with fresh new insights into this behavior.

Here each insight is a fresh understanding of something specific, so you can have more than one of them, just like you can see something from more than one specific perspective.

Going back to your sentence, it seems insights would be more appropriate because you are presumably developing more than one specific insight into your community. Note that your sentence and Merriam-Webster's second example sentence use the phrasing "insights into."