diff --git a/lib/_range.py b/lib/_range.py
index 818cb15a..01e5c902 100644
--- a/lib/_range.py
+++ b/lib/_range.py
@@ -115,6 +115,22 @@ class Range(object):
         if self._upper is None: return False
         return self._bounds[1] == ']'
 
+    def __contains__(self, x):
+        if self._empty: return False
+        if self._lower is not None:
+            if self._bounds[0] == '[':
+                if x < self._lower: return False
+            else:
+                if x <= self._lower: return False
+
+        if self._upper is not None:
+            if self._bounds[1] == ']':
+                if x > self._upper: return False
+            else:
+                if x >= self._upper: return False
+
+        return True
+
 
 def register_range(pgrange, pyrange, conn_or_curs, globally=False):
     """Register a typecaster and an adapter for range a range type.
diff --git a/tests/test_types_extras.py b/tests/test_types_extras.py
index 1826ad2c..d55acb91 100755
--- a/tests/test_types_extras.py
+++ b/tests/test_types_extras.py
@@ -859,6 +859,35 @@ class RangeTestCase(unittest.TestCase):
         self.assertRaises(ValueError, Range, bounds='(')
         self.assertRaises(ValueError, Range, bounds='[}')
 
+    def test_in(self):
+        from psycopg2.extras import Range
+        r = Range(empty=True)
+        self.assert_(10 not in r)
+
+        r = Range(10, 20)
+        self.assert_(9 not in r)
+        self.assert_(10 in r)
+        self.assert_(11 in r)
+        self.assert_(19 in r)
+        self.assert_(20 not in r)
+        self.assert_(21 not in r)
+
+        r = Range(10, 20, '(]')
+        self.assert_(9 not in r)
+        self.assert_(10 not in r)
+        self.assert_(11 in r)
+        self.assert_(19 in r)
+        self.assert_(20 in r)
+        self.assert_(21 not in r)
+
+        r = Range(20, 10)
+        self.assert_(9 not in r)
+        self.assert_(10 not in r)
+        self.assert_(11 not in r)
+        self.assert_(19 not in r)
+        self.assert_(20 not in r)
+        self.assert_(21 not in r)
+
 
 def skip_if_no_range(f):
     def skip_if_no_range_(self):