diff --git a/src/extensions/site-content/index.js b/src/extensions/site-content/index.js
index abb2f8524e5..ea48e043f06 100644
--- a/src/extensions/site-content/index.js
+++ b/src/extensions/site-content/index.js
@@ -74,10 +74,12 @@ registerPlugin( PLUGIN_NAME, {
 	icon,
 	render: compose( [
 		ifCondition( () => {
+			// Prevent Site Content from loading outside of post-new.php pages.
+			const isPostEditor = window.location.pathname.includes( 'post-new.php' );
 			const [ siteContentEnabled ] = useEntityProp( 'root', 'site', SITE_CONTENT_FEATURE_ENABLED_KEY );
 			// In the context of `widgets.php` site content is incompatible due to missing dependencies.
 			const isCompatible = !! selectWithoutHooks( 'core/editor' );
-			return siteContentEnabled && isCompatible;
+			return isPostEditor && siteContentEnabled && isCompatible;
 		} ),
 		withSelect( ( select ) => {
 			const {