diff --git a/sigi/apps/contatos/filters.py b/sigi/apps/contatos/filters.py
new file mode 100644
index 0000000..a2c674b
--- /dev/null
+++ b/sigi/apps/contatos/filters.py
@@ -0,0 +1,45 @@
+# coding: utf-8
+from django.contrib import admin
+
+
+class PopulationFilter(admin.SimpleListFilter):
+    # Human-readable title which will be displayed in the
+    # right admin sidebar just above the filter options.
+    title = 'População'
+
+    # Parameter for the filter that will be used in the URL query.
+    parameter_name = 'faixa'
+
+    def lookups(self, request, model_admin):
+        """
+        Returns a list of tuples. The first element in each
+        tuple is the coded value for the option that will
+        appear in the URL query. The second element is the
+        human-readable name for the option that will appear
+        in the right sidebar.
+        """
+        return (
+            ( '1', '< 100 Mil'),
+            ( '2', '100 Mil a 1 Milhão'),
+            ( '3', '1 Milhão a 100 Milhões'),
+            ( '4', '> 100 Milhões'),
+        )
+
+    def queryset(self, request, queryset):
+        """
+        Returns the filtered queryset based on the value
+        provided in the query string and retrievable via
+        `self.value()`.
+        """
+        # Compare the requested value (either '1', '2', '3' or '4')
+        # to decide how to filter the queryset.
+        if self.value() == '1':
+            return queryset.filter(populacao__lt=100000)
+        elif self.value() == '2':
+            return queryset.filter(populacao__gte=100000, populacao__lt=1000000)
+        elif self.value() == '3':
+            return queryset.filter(populacao__gte=1000000, populacao__lt=10000000)
+        elif self.value() == '4':
+            return queryset.filter(populacao__gt=100000000)
+        else:
+            return queryset