diff --git a/core/src/main/scala/org/apache/spark/deploy/master/ui/ApplicationPage.scala b/core/src/main/scala/org/apache/spark/deploy/master/ui/ApplicationPage.scala
index 94ff81c1a68ea..f40896457df95 100644
--- a/core/src/main/scala/org/apache/spark/deploy/master/ui/ApplicationPage.scala
+++ b/core/src/main/scala/org/apache/spark/deploy/master/ui/ApplicationPage.scala
@@ -100,11 +100,11 @@ private[ui] class ApplicationPage(parent: MasterWebUI) extends WebUIPage("app")
 
       <div class="row-fluid"> <!-- Executors -->
         <div class="span12">
-          <h4> Executor Summary </h4>
+          <h4> Executor Summary ({allExecutors.length}) </h4>
           {executorsTable}
           {
             if (removedExecutors.nonEmpty) {
-              <h4> Removed Executors </h4> ++
+              <h4> Removed Executors ({removedExecutors.length}) </h4> ++
               removedExecutorsTable
             }
           }
diff --git a/core/src/main/scala/org/apache/spark/deploy/master/ui/MasterPage.scala b/core/src/main/scala/org/apache/spark/deploy/master/ui/MasterPage.scala
index ce71300e9097d..bc0bf6a1d9700 100644
--- a/core/src/main/scala/org/apache/spark/deploy/master/ui/MasterPage.scala
+++ b/core/src/main/scala/org/apache/spark/deploy/master/ui/MasterPage.scala
@@ -128,14 +128,14 @@ private[ui] class MasterPage(parent: MasterWebUI) extends WebUIPage("") {
 
         <div class="row-fluid">
           <div class="span12">
-            <h4> Workers </h4>
+            <h4> Workers ({workers.length}) </h4>
             {workerTable}
           </div>
         </div>
 
         <div class="row-fluid">
           <div class="span12">
-            <h4 id="running-app"> Running Applications </h4>
+            <h4 id="running-app"> Running Applications ({activeApps.length}) </h4>
             {activeAppsTable}
           </div>
         </div>
@@ -144,7 +144,7 @@ private[ui] class MasterPage(parent: MasterWebUI) extends WebUIPage("") {
           {if (hasDrivers) {
              <div class="row-fluid">
                <div class="span12">
-                 <h4> Running Drivers </h4>
+                 <h4> Running Drivers ({activeDrivers.length}) </h4>
                  {activeDriversTable}
                </div>
              </div>
@@ -154,7 +154,7 @@ private[ui] class MasterPage(parent: MasterWebUI) extends WebUIPage("") {
 
         <div class="row-fluid">
           <div class="span12">
-            <h4 id="completed-app"> Completed Applications </h4>
+            <h4 id="completed-app"> Completed Applications ({completedApps.length}) </h4>
             {completedAppsTable}
           </div>
         </div>
@@ -164,7 +164,7 @@ private[ui] class MasterPage(parent: MasterWebUI) extends WebUIPage("") {
             if (hasDrivers) {
               <div class="row-fluid">
                 <div class="span12">
-                  <h4> Completed Drivers </h4>
+                  <h4> Completed Drivers ({completedDrivers.length}) </h4>
                   {completedDriversTable}
                 </div>
               </div>