diff --git a/faker/providers/address/fr_FR/__init__.py b/faker/providers/address/fr_FR/__init__.py
index 1125716e..2ee23305 100644
--- a/faker/providers/address/fr_FR/__init__.py
+++ b/faker/providers/address/fr_FR/__init__.py
@@ -469,10 +469,10 @@ class Provider(AddressProvider):
 
     def postcode(self) -> str:
         """
-        Randomly returns a postcode generated from existing french depertment number.
+        Randomly returns a postcode generated from existing french department number.
         exemple: '33260'
         """
         department = self.department_number()
         if department in ["2A", "2B"]:
             department = "20"
-        return f"{department}{self.random_number(digits=5 - len(department))}"
+        return f"{department}{self.random_number(digits=5 - len(department), fix_len=True)}"

diff --git a/tests/providers/test_address.py b/tests/providers/test_address.py
index 0e5c47ef..0ecef674 100644
--- a/tests/providers/test_address.py
+++ b/tests/providers/test_address.py
@@ -870,6 +870,7 @@ class TestFrFr:
         for _ in range(num_samples):
             postcode = faker.postcode()
             assert isinstance(postcode, str)
+            assert len(postcode) == 5
             assert (
                 postcode[:3] in department_numbers  # for 3 digits deparments number
                 or postcode[:2] == "20"  # for Corsica : "2A" or "2B"

fr_FR address provider generates less than 5 digits postcode
* Faker version: master (18.9.0), bug introduced by https://github.com/joke2k/faker/pull/1852

The new provider method can generate 4 or less digits values. But french postcodes must be 5 digits long (cf https://en.wikipedia.org/wiki/Postal_codes_in_France).

Line to fix: https://github.com/joke2k/faker/blob/fa79c6b0c510274b08b46ad0f007fd1b517a9ab2/faker/providers/address/fr_FR/__init__.py#LL478C27-L478C27

### Steps to reproduce

1. generate a few postcodes with `fr_FR` address provider

### Expected behavior

5 digits values

### Actual behavior

From 3 to 5 digits values

tests/providers/test_address.py::TestFrFr::test_postcode
tests/providers/test_address.py::TestBaseProvider::test_alpha_2_country_codes tests/providers/test_address.py::TestBaseProvider::test_alpha_2_country_codes_as_default tests/providers/test_address.py::TestBaseProvider::test_alpha_3_country_codes tests/providers/test_address.py::TestBaseProvider::test_bad_country_code_representation tests/providers/test_address.py::TestBaseProvider::test_administrative_unit_all_locales tests/providers/test_address.py::TestBaseProvider::test_country_code_all_locales tests/providers/test_address.py::TestBaseProvider::test_current_country_errors tests/providers/test_address.py::TestAzAz::test_street_suffix_long tests/providers/test_address.py::TestAzAz::test_city_name tests/providers/test_address.py::TestAzAz::test_street_name tests/providers/test_address.py::TestAzAz::test_settlement_name tests/providers/test_address.py::TestAzAz::test_village_name tests/providers/test_address.py::TestAzAz::test_postcode tests/providers/test_address.py::TestCsCz::test_street_suffix_short tests/providers/test_address.py::TestCsCz::test_street_suffix_long tests/providers/test_address.py::TestCsCz::test_city_name tests/providers/test_address.py::TestCsCz::test_street_name tests/providers/test_address.py::TestCsCz::test_state tests/providers/test_address.py::TestCsCz::test_postcode tests/providers/test_address.py::TestCsCz::test_city_with_postcode tests/providers/test_address.py::TestDaDk::test_street_suffix tests/providers/test_address.py::TestDaDk::test_street_name tests/providers/test_address.py::TestDaDk::test_dk_street_name tests/providers/test_address.py::TestDaDk::test_city_name tests/providers/test_address.py::TestDaDk::test_state tests/providers/test_address.py::TestDaDk::test_postcode tests/providers/test_address.py::TestDeAt::test_city tests/providers/test_address.py::TestDeAt::test_state tests/providers/test_address.py::TestDeAt::test_street_suffix_short tests/providers/test_address.py::TestDeAt::test_street_suffix_long tests/providers/test_address.py::TestDeAt::test_country tests/providers/test_address.py::TestDeAt::test_postcode tests/providers/test_address.py::TestDeAt::test_city_with_postcode tests/providers/test_address.py::TestDeDe::test_city tests/providers/test_address.py::TestDeDe::test_state tests/providers/test_address.py::TestDeDe::test_street_suffix_short tests/providers/test_address.py::TestDeDe::test_street_suffix_long tests/providers/test_address.py::TestDeDe::test_country tests/providers/test_address.py::TestDeDe::test_postcode tests/providers/test_address.py::TestDeDe::test_city_with_postcode tests/providers/test_address.py::TestElGr::test_line_address tests/providers/test_address.py::TestElGr::test_street_prefix_short tests/providers/test_address.py::TestElGr::test_street_prefix_long tests/providers/test_address.py::TestElGr::test_street tests/providers/test_address.py::TestElGr::test_city tests/providers/test_address.py::TestElGr::test_region tests/providers/test_address.py::TestEnAu::test_postcode tests/providers/test_address.py::TestEnAu::test_state tests/providers/test_address.py::TestEnAu::test_city_prefix tests/providers/test_address.py::TestEnAu::test_state_abbr tests/providers/test_address.py::TestEnCa::test_postcode tests/providers/test_address.py::TestEnCa::test_postcode_in_province tests/providers/test_address.py::TestEnCa::test_postalcode tests/providers/test_address.py::TestEnCa::test_postal_code_letter tests/providers/test_address.py::TestEnCa::test_province tests/providers/test_address.py::TestEnCa::test_province_abbr tests/providers/test_address.py::TestEnCa::test_city_prefix tests/providers/test_address.py::TestEnCa::test_secondary_address tests/providers/test_address.py::TestEnGb::test_county tests/providers/test_address.py::TestEnIe::test_postcode tests/providers/test_address.py::TestEnIe::test_county tests/providers/test_address.py::TestEnUS::test_city_prefix tests/providers/test_address.py::TestEnUS::test_state tests/providers/test_address.py::TestEnUS::test_state_abbr tests/providers/test_address.py::TestEnUS::test_state_abbr_states_only tests/providers/test_address.py::TestEnUS::test_state_abbr_no_territories tests/providers/test_address.py::TestEnUS::test_state_abbr_no_freely_associated_states tests/providers/test_address.py::TestEnUS::test_postcode tests/providers/test_address.py::TestEnUS::test_postcode_in_state tests/providers/test_address.py::TestEnUS::test_zipcode tests/providers/test_address.py::TestEnUS::test_zipcode_in_state tests/providers/test_address.py::TestEnUS::test_zipcode_plus4 tests/providers/test_address.py::TestEnUS::test_military_ship tests/providers/test_address.py::TestEnUS::test_military_state tests/providers/test_address.py::TestEnUS::test_military_apo tests/providers/test_address.py::TestEnUS::test_military_dpo tests/providers/test_address.py::TestEnUS::test_postalcode tests/providers/test_address.py::TestEnUS::test_postalcode_in_state tests/providers/test_address.py::TestEnUS::test_state_abbr_determinism tests/providers/test_address.py::TestEsCo::test_department_code tests/providers/test_address.py::TestEsCo::test_department tests/providers/test_address.py::TestEsCo::test_municipality_code tests/providers/test_address.py::TestEsCo::test_municipality tests/providers/test_address.py::TestEsCo::test_street_prefix tests/providers/test_address.py::TestEsCo::test_street_suffix tests/providers/test_address.py::TestEsCo::test_street_name tests/providers/test_address.py::TestEsCo::test_building_number tests/providers/test_address.py::TestEsCo::test_secondary_address tests/providers/test_address.py::TestEsCo::test_street_address tests/providers/test_address.py::TestEsCo::test_postcode tests/providers/test_address.py::TestEsCo::test_address tests/providers/test_address.py::TestEsEs::test_state_name tests/providers/test_address.py::TestEsEs::test_street_prefix tests/providers/test_address.py::TestEsEs::test_secondary_address tests/providers/test_address.py::TestEsEs::test_regions tests/providers/test_address.py::TestEsEs::test_autonomous_community tests/providers/test_address.py::TestEsEs::test_postcode tests/providers/test_address.py::TestEsMx::test_city_prefix tests/providers/test_address.py::TestEsMx::test_city_suffix tests/providers/test_address.py::TestEsMx::test_city_adjective tests/providers/test_address.py::TestEsMx::test_street_prefix tests/providers/test_address.py::TestEsMx::test_secondary_address tests/providers/test_address.py::TestEsMx::test_state tests/providers/test_address.py::TestEsMx::test_state_abbr tests/providers/test_address.py::TestFaIr::test_city_prefix tests/providers/test_address.py::TestFaIr::test_secondary_address tests/providers/test_address.py::TestFaIr::test_state tests/providers/test_address.py::TestFrFr::test_street_prefix tests/providers/test_address.py::TestFrFr::test_city_prefix tests/providers/test_address.py::TestFrFr::test_region tests/providers/test_address.py::TestFrFr::test_department tests/providers/test_address.py::TestFrFr::test_department_name tests/providers/test_address.py::TestFrFr::test_department_number tests/providers/test_address.py::TestHeIl::test_city_name tests/providers/test_address.py::TestHeIl::test_street_title tests/providers/test_address.py::TestHiIn::test_city_name tests/providers/test_address.py::TestHiIn::test_state tests/providers/test_address.py::TestTaIn::test_city_name tests/providers/test_address.py::TestTaIn::test_state tests/providers/test_address.py::TestFiFi::test_city tests/providers/test_address.py::TestFiFi::test_street_suffix tests/providers/test_address.py::TestFiFi::test_state tests/providers/test_address.py::TestHrHr::test_city_name tests/providers/test_address.py::TestHrHr::test_street_name tests/providers/test_address.py::TestHrHr::test_state tests/providers/test_address.py::TestHyAm::test_address tests/providers/test_address.py::TestHyAm::test_building_number tests/providers/test_address.py::TestHyAm::test_city tests/providers/test_address.py::TestHyAm::test_city_prefix tests/providers/test_address.py::TestHyAm::test_country tests/providers/test_address.py::TestHyAm::test_postcode tests/providers/test_address.py::TestHyAm::test_postcode_in_state tests/providers/test_address.py::TestHyAm::test_secondary_address tests/providers/test_address.py::TestHyAm::test_state tests/providers/test_address.py::TestHyAm::test_state_abbr tests/providers/test_address.py::TestHyAm::test_street tests/providers/test_address.py::TestHyAm::test_street_address tests/providers/test_address.py::TestHyAm::test_street_name tests/providers/test_address.py::TestHyAm::test_street_prefix tests/providers/test_address.py::TestHyAm::test_street_suffix tests/providers/test_address.py::TestHyAm::test_village tests/providers/test_address.py::TestHyAm::test_village_prefix tests/providers/test_address.py::TestItIt::test_city tests/providers/test_address.py::TestItIt::test_postcode_city_province tests/providers/test_address.py::TestItIt::test_city_prefix tests/providers/test_address.py::TestItIt::test_secondary_address tests/providers/test_address.py::TestItIt::test_administrative_unit tests/providers/test_address.py::TestItIt::test_state_abbr tests/providers/test_address.py::TestJaJp::test_chome tests/providers/test_address.py::TestJaJp::test_ban tests/providers/test_address.py::TestJaJp::test_gou tests/providers/test_address.py::TestJaJp::test_town tests/providers/test_address.py::TestJaJp::test_prefecture tests/providers/test_address.py::TestJaJp::test_city tests/providers/test_address.py::TestJaJp::test_country tests/providers/test_address.py::TestJaJp::test_building_name tests/providers/test_address.py::TestJaJp::test_address tests/providers/test_address.py::TestJaJp::test_postcode tests/providers/test_address.py::TestJaJp::test_zipcode tests/providers/test_address.py::TestKoKr::test_old_postal_code tests/providers/test_address.py::TestKoKr::test_postal_code tests/providers/test_address.py::TestKoKr::test_postcode tests/providers/test_address.py::TestKoKr::test_city tests/providers/test_address.py::TestKoKr::test_borough tests/providers/test_address.py::TestKoKr::test_town tests/providers/test_address.py::TestKoKr::test_town_suffix tests/providers/test_address.py::TestKoKr::test_building_name tests/providers/test_address.py::TestKoKr::test_building_suffix tests/providers/test_address.py::TestKoKr::test_building_dong tests/providers/test_address.py::TestNeNp::test_province tests/providers/test_address.py::TestNeNp::test_district tests/providers/test_address.py::TestNeNp::test_city tests/providers/test_address.py::TestNeNp::test_country tests/providers/test_address.py::TestNoNo::test_postcode tests/providers/test_address.py::TestNoNo::test_city_suffix tests/providers/test_address.py::TestNoNo::test_street_suffix tests/providers/test_address.py::TestNoNo::test_address tests/providers/test_address.py::TestZhTw::test_postcode tests/providers/test_address.py::TestZhTw::test_city_name tests/providers/test_address.py::TestZhTw::test_city_suffix tests/providers/test_address.py::TestZhTw::test_city tests/providers/test_address.py::TestZhTw::test_country tests/providers/test_address.py::TestZhTw::test_street_name tests/providers/test_address.py::TestZhTw::test_address tests/providers/test_address.py::TestZhCn::test_postcode tests/providers/test_address.py::TestZhCn::test_city_name tests/providers/test_address.py::TestZhCn::test_city_suffix tests/providers/test_address.py::TestZhCn::test_city tests/providers/test_address.py::TestZhCn::test_province tests/providers/test_address.py::TestZhCn::test_district tests/providers/test_address.py::TestZhCn::test_country tests/providers/test_address.py::TestZhCn::test_street_name tests/providers/test_address.py::TestZhCn::test_address tests/providers/test_address.py::TestPtBr::test_country tests/providers/test_address.py::TestPtBr::test_bairro tests/providers/test_address.py::TestPtBr::test_neighborhood tests/providers/test_address.py::TestPtBr::test_estado tests/providers/test_address.py::TestPtBr::test_estado_nome tests/providers/test_address.py::TestPtBr::test_estado_sigla tests/providers/test_address.py::TestPtBr::test_address tests/providers/test_address.py::TestPtBr::test_raw_postcode tests/providers/test_address.py::TestPtBr::test_formatted_postcode tests/providers/test_address.py::TestPtPt::test_distrito tests/providers/test_address.py::TestPtPt::test_concelho tests/providers/test_address.py::TestPtPt::test_freguesia tests/providers/test_address.py::TestPtPt::test_place_name tests/providers/test_address.py::TestEnPh::test_metro_manila_postcode tests/providers/test_address.py::TestEnPh::test_luzon_province_postcode tests/providers/test_address.py::TestEnPh::test_visayas_province_postcode tests/providers/test_address.py::TestEnPh::test_mindanao_province_postcode tests/providers/test_address.py::TestEnPh::test_postcode tests/providers/test_address.py::TestEnPh::test_building_number tests/providers/test_address.py::TestEnPh::test_floor_unit_number tests/providers/test_address.py::TestEnPh::test_ordinal_floor_number tests/providers/test_address.py::TestEnPh::test_address tests/providers/test_address.py::TestFilPh::test_metro_manila_postcode tests/providers/test_address.py::TestFilPh::test_luzon_province_postcode tests/providers/test_address.py::TestFilPh::test_visayas_province_postcode tests/providers/test_address.py::TestFilPh::test_mindanao_province_postcode tests/providers/test_address.py::TestFilPh::test_postcode tests/providers/test_address.py::TestFilPh::test_building_number tests/providers/test_address.py::TestFilPh::test_floor_unit_number tests/providers/test_address.py::TestFilPh::test_ordinal_floor_number tests/providers/test_address.py::TestFilPh::test_address tests/providers/test_address.py::TestTlPh::test_metro_manila_postcode tests/providers/test_address.py::TestTlPh::test_luzon_province_postcode tests/providers/test_address.py::TestTlPh::test_visayas_province_postcode tests/providers/test_address.py::TestTlPh::test_mindanao_province_postcode tests/providers/test_address.py::TestTlPh::test_postcode tests/providers/test_address.py::TestTlPh::test_building_number tests/providers/test_address.py::TestTlPh::test_floor_unit_number tests/providers/test_address.py::TestTlPh::test_ordinal_floor_number tests/providers/test_address.py::TestTlPh::test_address tests/providers/test_address.py::TestRuRu::test_city_name tests/providers/test_address.py::TestRuRu::test_country tests/providers/test_address.py::TestRuRu::test_region tests/providers/test_address.py::TestRuRu::test_postcode tests/providers/test_address.py::TestRuRu::test_city_prefix tests/providers/test_address.py::TestRuRu::test_street_suffix tests/providers/test_address.py::TestRuRu::test_street_title tests/providers/test_address.py::TestRuRu::test_street_name tests/providers/test_address.py::TestRuRu::test_street_name_lexical[feminine_suffix_and_noflex_title] tests/providers/test_address.py::TestRuRu::test_street_name_lexical[feminine_suffix_and_flex_title] tests/providers/test_address.py::TestRuRu::test_street_name_lexical[non_feminine_suffix_and_noflex_title] tests/providers/test_address.py::TestRuRu::test_street_name_lexical[masc_suffix_and_irregular_masc_title] tests/providers/test_address.py::TestRuRu::test_street_name_lexical[masc_suffix_and_ck_street_stem] tests/providers/test_address.py::TestRuRu::test_street_name_lexical[masc_suffix_and_uk_street_stem] tests/providers/test_address.py::TestRuRu::test_street_name_lexical[masc_suffix_and_other_stem] tests/providers/test_address.py::TestRuRu::test_street_name_lexical[neu_suffx_and_iregular_neu_street_title] tests/providers/test_address.py::TestRuRu::test_street_name_lexical[neu_suffix_and_regular_street_title] tests/providers/test_address.py::TestThTh::test_country tests/providers/test_address.py::TestThTh::test_city_name tests/providers/test_address.py::TestThTh::test_province tests/providers/test_address.py::TestThTh::test_amphoe tests/providers/test_address.py::TestThTh::test_tambon tests/providers/test_address.py::TestThTh::test_postcode tests/providers/test_address.py::TestEnIn::test_city_name tests/providers/test_address.py::TestEnIn::test_state tests/providers/test_address.py::TestSkSk::test_street_suffix_short tests/providers/test_address.py::TestSkSk::test_street_suffix_long tests/providers/test_address.py::TestSkSk::test_city_name tests/providers/test_address.py::TestSkSk::test_street_name tests/providers/test_address.py::TestSkSk::test_state tests/providers/test_address.py::TestSkSk::test_postcode tests/providers/test_address.py::TestSkSk::test_city_with_postcode tests/providers/test_address.py::TestDeCh::test_canton_name tests/providers/test_address.py::TestDeCh::test_canton_code tests/providers/test_address.py::TestDeCh::test_canton tests/providers/test_address.py::TestDeCh::test_city tests/providers/test_address.py::TestRoRo::test_address tests/providers/test_address.py::TestRoRo::test_street_address tests/providers/test_address.py::TestRoRo::test_street_name tests/providers/test_address.py::TestRoRo::test_street_prefix tests/providers/test_address.py::TestRoRo::test_building_number tests/providers/test_address.py::TestRoRo::test_secondary_address tests/providers/test_address.py::TestRoRo::test_city tests/providers/test_address.py::TestRoRo::test_city_name tests/providers/test_address.py::TestRoRo::test_state tests/providers/test_address.py::TestRoRo::test_state_abbr tests/providers/test_address.py::TestRoRo::test_postcode tests/providers/test_address.py::TestRoRo::test_city_with_postcode tests/providers/test_address.py::TestEnNz::test_te_reo_part tests/providers/test_address.py::TestEnNz::test_reo_first tests/providers/test_address.py::TestEnNz::test_reo_ending tests/providers/test_address.py::TestEnNz::test_city_prefix tests/providers/test_address.py::TestEnNz::test_city_suffix tests/providers/test_address.py::TestEnNz::test_rd_number tests/providers/test_address.py::TestEnNz::test_secondary_address tests/providers/test_address.py::TestFrCh::test_canton_name tests/providers/test_address.py::TestFrCh::test_canton_code tests/providers/test_address.py::TestFrCh::test_canton tests/providers/test_address.py::TestHuHu::test_administrative_unit tests/providers/test_address.py::TestHuHu::test_street_address_with_county tests/providers/test_address.py::TestHuHu::test_city_prefix tests/providers/test_address.py::TestHuHu::test_city_part tests/providers/test_address.py::TestHuHu::test_real_city_name tests/providers/test_address.py::TestHuHu::test_frequent_street_name tests/providers/test_address.py::TestHuHu::test_postcode tests/providers/test_address.py::TestHuHu::test_street_name tests/providers/test_address.py::TestHuHu::test_building_number tests/providers/test_address.py::TestIdId::test_street tests/providers/test_address.py::TestIdId::test_street_prefix_short tests/providers/test_address.py::TestIdId::test_street_prefix_long tests/providers/test_address.py::TestIdId::test_city_name tests/providers/test_address.py::TestIdId::test_administrative_unit tests/providers/test_address.py::TestIdId::test_state_abbr tests/providers/test_address.py::TestIdId::test_country tests/providers/test_address.py::TestKaGe::test_street_title tests/providers/test_address.py::TestKaGe::test_city_name tests/providers/test_address.py::TestSlSi::test_city_name tests/providers/test_address.py::TestSlSi::test_street_name tests/providers/test_address.py::TestSlSi::test_administrative_unit tests/providers/test_address.py::TestSvSe::test_street_prefix tests/providers/test_address.py::TestSvSe::test_city_name tests/providers/test_address.py::TestSvSe::test_administrative_unit tests/providers/test_address.py::TestUkUa::test_city_prefix tests/providers/test_address.py::TestUkUa::test_city_name tests/providers/test_address.py::TestUkUa::test_postcode tests/providers/test_address.py::TestUkUa::test_street_prefix tests/providers/test_address.py::TestUkUa::test_street_name tests/providers/test_address.py::TestUkUa::test_street_title tests/providers/test_address.py::TestUkUa::test_region tests/providers/test_address.py::TestFrCa::test_province tests/providers/test_address.py::TestFrCa::test_province_abbr tests/providers/test_address.py::TestFrCa::test_city_prefixes tests/providers/test_address.py::TestFrCa::test_city_suffixes tests/providers/test_address.py::TestFrCa::test_street_prefixes tests/providers/test_address.py::TestFrCa::test_administrative_unit tests/providers/test_address.py::TestPlPl::test_postcode tests/providers/test_address.py::TestPlPl::test_zipcode tests/providers/test_address.py::TestPlPl::test_postalcode