diff --git a/app/models/community_user.rb b/app/models/community_user.rb
index 43e8fa1e3..a62926dcc 100644
--- a/app/models/community_user.rb
+++ b/app/models/community_user.rb
@@ -24,11 +24,6 @@ def suspended?
     false
   end
 
-  # All undeleted posts on this community by this user.
-  def post_count
-    Post.unscoped.where(community_id: community_id).where(user: user).undeleted.count
-  end
-
   # Calculation functions for privilege scores
   # These are quite expensive, so we'll cache them for a while
   def post_score
diff --git a/app/models/post.rb b/app/models/post.rb
index 882f1f399..54d1c1e5b 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -25,6 +25,7 @@ class Post < ApplicationRecord
   has_many :reactions
 
   counter_culture :parent, column_name: proc { |model| model.deleted? ? nil : 'answer_count' }
+  counter_culture [:user, :community_user], column_name: proc { |model| model.deleted? ? nil : 'post_count' }
 
   serialize :tags_cache, Array
 
diff --git a/db/migrate/20241020193053_add_post_count_to_community_users.rb b/db/migrate/20241020193053_add_post_count_to_community_users.rb
new file mode 100644
index 000000000..a6c54aa17
--- /dev/null
+++ b/db/migrate/20241020193053_add_post_count_to_community_users.rb
@@ -0,0 +1,5 @@
+class AddPostCountToCommunityUsers < ActiveRecord::Migration[7.0]
+  def change
+    add_column :community_users, :post_count, :integer, default: 0, null: false
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index baac35e3e..d71e83045 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2024_04_05_113618) do
+ActiveRecord::Schema[7.0].define(version: 2024_10_20_193053) do
   create_table "abilities", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
     t.bigint "community_id"
     t.string "name"
@@ -226,6 +226,7 @@
     t.boolean "deleted", default: false, null: false
     t.datetime "deleted_at", precision: nil
     t.bigint "deleted_by_id"
+    t.integer "post_count", default: 0, null: false
     t.index ["community_id"], name: "index_community_users_on_community_id"
     t.index ["deleted_by_id"], name: "index_community_users_on_deleted_by_id"
     t.index ["user_id"], name: "index_community_users_on_user_id"