diff --git a/app/controllers/instructeurs/dossiers_controller.rb b/app/controllers/instructeurs/dossiers_controller.rb
index a148e129a..1f9bc3dd9 100644
--- a/app/controllers/instructeurs/dossiers_controller.rb
+++ b/app/controllers/instructeurs/dossiers_controller.rb
@@ -244,8 +244,8 @@ module Instructeurs
 
     def champs_private_params
       params.require(:dossier).permit(champs_private_attributes: [
-        :id, :primary_value, :secondary_value, :piece_justificative_file, :value, value: [],
-        champs_attributes: [:id, :_destroy, :value, :primary_value, :secondary_value, :piece_justificative_file, value: []]
+        :id, :primary_value, :secondary_value, :piece_justificative_file, :value_other, :external_id, :numero_allocataire, :code_postal, :departement, :code_departement, :value, value: [],
+        champs_attributes: [:id, :_destroy, :value, :primary_value, :secondary_value, :piece_justificative_file, :value_other, :external_id, :numero_allocataire, :code_postal, :departement, :code_departement, value: []]
       ])
     end
 
diff --git a/app/controllers/users/dossiers_controller.rb b/app/controllers/users/dossiers_controller.rb
index 6ba476c78..0f0c33f1d 100644
--- a/app/controllers/users/dossiers_controller.rb
+++ b/app/controllers/users/dossiers_controller.rb
@@ -337,8 +337,8 @@ module Users
     def champs_params
       params.permit(dossier: {
         champs_attributes: [
-          :id, :value, :value_other, :external_id, :primary_value, :secondary_value, :numero_allocataire, :code_postal, :piece_justificative_file, value: [],
-          champs_attributes: [:id, :_destroy, :value, :value_other, :external_id, :primary_value, :secondary_value, :numero_allocataire, :code_postal, :piece_justificative_file, value: []]
+          :id, :value, :value_other, :external_id, :primary_value, :secondary_value, :numero_allocataire, :code_postal, :piece_justificative_file, :departement, :code_departement, value: [],
+          champs_attributes: [:id, :_destroy, :value, :value_other, :external_id, :primary_value, :secondary_value, :numero_allocataire, :code_postal, :piece_justificative_file, :departement, :code_departement, value: []]
         ]
       })
     end
diff --git a/app/javascript/components/ComboCommunesSearch.jsx b/app/javascript/components/ComboCommunesSearch.jsx
index b02c5070e..ae2b005ba 100644
--- a/app/javascript/components/ComboCommunesSearch.jsx
+++ b/app/javascript/components/ComboCommunesSearch.jsx
@@ -49,12 +49,31 @@ const [placeholderDepartement, placeholderCommune] =
   ];
 
 function ComboCommunesSearch(params) {
-  const [departementCode, setDepartementCode] = useState();
+  const hiddenDepartementFieldId = `${params.hiddenFieldId}:departement`;
+  const hiddenDepartementField = useMemo(
+    () =>
+      document.querySelector(`input[data-attr="${hiddenDepartementFieldId}"]`),
+    [params.hiddenFieldId]
+  );
+  const hiddenCodeDepartementField = useMemo(
+    () =>
+      document.querySelector(
+        `input[data-attr="${params.hiddenFieldId}:code_departement"]`
+      ),
+    [params.hiddenFieldId]
+  );
   const inputId = useMemo(
     () =>
       document.querySelector(`input[data-uuid="${params.hiddenFieldId}"]`)?.id,
     [params.hiddenFieldId]
   );
+  const [departementCode, setDepartementCode] = useState(
+    () => hiddenCodeDepartementField?.value
+  );
+  const departementValue = useMemo(
+    () => hiddenDepartementField?.value,
+    [hiddenDepartementField]
+  );
   const departementDescribedBy = `${inputId}_departement_notice`;
   const communeDescribedBy = `${inputId}_commune_notice`;
 
@@ -68,12 +87,17 @@ function ComboCommunesSearch(params) {
           </p>
         </div>
         <ComboDepartementsSearch
+          value={departementValue}
           inputId={!departementCode ? inputId : null}
           aria-describedby={departementDescribedBy}
           placeholder={placeholderDepartement}
-          mandatory={params.mandatory}
-          onChange={(_, result) => {
+          required={params.mandatory}
+          onChange={(value, result) => {
             setDepartementCode(result?.code);
+            if (hiddenDepartementField && hiddenCodeDepartementField) {
+              hiddenDepartementField.setAttribute('value', value);
+              hiddenCodeDepartementField.setAttribute('value', result?.code);
+            }
           }}
         />
       </div>
diff --git a/app/javascript/components/ComboSearch.jsx b/app/javascript/components/ComboSearch.jsx
index 563f494d5..8677f2b5d 100644
--- a/app/javascript/components/ComboSearch.jsx
+++ b/app/javascript/components/ComboSearch.jsx
@@ -51,7 +51,7 @@ function ComboSearch({
       ),
     [hiddenFieldId]
   );
-  const initialValue = hiddenValueField && hiddenValueField.value;
+  const initialValue = hiddenValueField ? hiddenValueField.value : props.value;
   const [searchTerm, setSearchTerm] = useState('');
   const [debouncedSearchTerm] = useDebounce(searchTerm, 300);
   const [value, setValue] = useState(initialValue);
@@ -177,6 +177,7 @@ function ComboSearch({
 }
 
 ComboSearch.propTypes = {
+  value: PropTypes.string,
   hiddenFieldId: PropTypes.string,
   scope: PropTypes.string,
   minimumInputLength: PropTypes.number,
diff --git a/app/models/champs/commune_champ.rb b/app/models/champs/commune_champ.rb
index 4477da8e3..5f3ccdc05 100644
--- a/app/models/champs/commune_champ.rb
+++ b/app/models/champs/commune_champ.rb
@@ -20,6 +20,8 @@
 #  type_de_champ_id               :integer
 #
 class Champs::CommuneChamp < Champs::TextChamp
+  store_accessor :value_json, :departement, :code_departement
+
   def for_export
     [value, external_id]
   end
diff --git a/app/views/shared/dossiers/editable_champs/_communes.html.haml b/app/views/shared/dossiers/editable_champs/_communes.html.haml
index 372f3b211..0e43f37b6 100644
--- a/app/views/shared/dossiers/editable_champs/_communes.html.haml
+++ b/app/views/shared/dossiers/editable_champs/_communes.html.haml
@@ -1,4 +1,6 @@
 - hidden_field_id = SecureRandom.uuid
 = form.hidden_field :value, { data: { uuid: hidden_field_id } }
 = form.hidden_field :external_id, { data: { reference: true } }
+= form.hidden_field :departement, { data: { attr: "#{hidden_field_id}:departement" } }
+= form.hidden_field :code_departement, { data: { attr: "#{hidden_field_id}:code_departement" } }
 = react_component("ComboCommunesSearch", mandatory: champ.mandatory?, hiddenFieldId: hidden_field_id)