diff --git a/easy/number_of_senior_citizens.py b/easy/number_of_senior_citizens.py
new file mode 100644
index 0000000..90edbde
--- /dev/null
+++ b/easy/number_of_senior_citizens.py
@@ -0,0 +1,8 @@
+# https://leetcode.com/problems/number-of-senior-citizens
+from typing import List
+
+
+class Solution:
+    def countSeniors(self, details: List[str]) -> int:
+        return len(list(filter(lambda x: int(x[11:13]) > 60, details)))
+