diff --git a/homeassistant/components/traccar_server/diagnostics.py b/homeassistant/components/traccar_server/diagnostics.py
index a6ad6084daf..8e9e6490e44 100644
--- a/homeassistant/components/traccar_server/diagnostics.py
+++ b/homeassistant/components/traccar_server/diagnostics.py
@@ -13,7 +13,12 @@ from homeassistant.helpers import device_registry as dr, entity_registry as er
 from .const import DOMAIN
 from .coordinator import TraccarServerCoordinator
 
-TO_REDACT = {CONF_ADDRESS, CONF_LATITUDE, CONF_LONGITUDE}
+TO_REDACT = {
+    CONF_ADDRESS,
+    CONF_LATITUDE,
+    CONF_LONGITUDE,
+    "area",  # This is the polygon area of a geofence
+}
 
 
 async def async_get_config_entry_diagnostics(
diff --git a/tests/components/traccar_server/snapshots/test_diagnostics.ambr b/tests/components/traccar_server/snapshots/test_diagnostics.ambr
index 1726f1c3d45..20d01e427ea 100644
--- a/tests/components/traccar_server/snapshots/test_diagnostics.ambr
+++ b/tests/components/traccar_server/snapshots/test_diagnostics.ambr
@@ -34,7 +34,7 @@
           'uniqueId': 'abc123',
         }),
         'geofence': dict({
-          'area': 'string',
+          'area': '**REDACTED**',
           'attributes': dict({
           }),
           'calendarId': 0,
@@ -134,7 +134,7 @@
           'uniqueId': 'abc123',
         }),
         'geofence': dict({
-          'area': 'string',
+          'area': '**REDACTED**',
           'attributes': dict({
           }),
           'calendarId': 0,