The Ultimate 2025 Guide to Substack’s Top Categories (+Full List, Analyzed & Ranked)

Want to know which Substack categories are the most competitive, which are growing fast, and which are wide open with opportunity?

I've analyzed all 29 top Substack categories for you.

This data-driven guide breaks it all down for you — so you can stop guessing and start building your Substack strategically.

Why This Guide Exists

When I asked Substack for a list of the most popular categories, they told me it wasn’t publicly available.

So… I built one myself.
With the help of my husband Patrick (a data-loving software developer), we gathered the data and analyzed it — just like I once did with my famous Medium Tags List that earned me the nickname “Medium Goddess.”

Now, I’m bringing you the Substack version: a complete, ranked category guide for 2025.

Why Categories Matter

👉 On Substack, your primary category is the only one that counts for leaderboard rankings.
👉 Choosing the right one can boost your visibility — or bury you.
👉 Switching strategically can unlock new growth opportunities.

This guide helps you make the choice with hard numbers and insider insights.

Get Your Copy Now

Don’t pick your Substack category blindly.
Download the Ultimate 2025 Guide to Substack’s Top Categories today and make smarter, data-backed decisions for your growth.

This guide is written by me, Kristina God.

I'm a global top #25 Education Substack author and have already helped hundreds of writers, creators, makers, and dreamers get on Substack and thrive.

From 1000 subscribers within a few weeks, to 10,000 or even 30,000.

From zero to Substack bestseller with hundreds of paid subscribers.

I love to see others succeed.

I want you to be the next!