diff --git a/app/models.py b/app/models.py
index 060560cd..9deb5929 100644
--- a/app/models.py
+++ b/app/models.py
@@ -93,8 +93,8 @@ class Instance(db.Model):
     def known_communities_count(self):
         return db.session.execute(text(f'SELECT count(*) FROM community WHERE instance_id = {self.id}')).all()[0].count
 
-    # def known_users_count(self):
-        # return db.session.execute(text(f'SELECT count(DISTINCT instance_id) as count FROM USER')).all()[0].count
+    def known_users_count(self):
+        return db.session.execute(text(f'SELECT count(*) FROM "user" WHERE instance_id = {self.id}')).all()[0].count
 
     def __repr__(self):
         return '<Instance {}>'.format(self.domain)
diff --git a/app/templates/admin/instances.html b/app/templates/admin/instances.html
index 2b4402db..173aeaf9 100644
--- a/app/templates/admin/instances.html
+++ b/app/templates/admin/instances.html
@@ -23,6 +23,7 @@
                <th>Software</th>
                <th>Version</th>
                <th title="{{ _('Known Communities') }}">Communities</td>
+               <th title="{{ _('Known Users') }}">Users</td>
                <th>Posts</th>
                <th>Post Replies</th>
                <th>Vote Weight</th>
@@ -37,6 +38,7 @@
                     <td>{{ instance.software  }}</td>
                     <td>{{ instance.version if instance.version }}</td>
                     <td>{{ instance.known_communities_count()  }}</td>
+                    <td>{{ instance.known_users_count()  }}</td>
                     <td>{{ instance.post_count()  }}</td>
                     <td>{{ instance.post_replies_count()  }}</td>
                     <td>{{ instance.vote_weight  }}</td>