diff --git a/faker/providers/address/en_CA/__init__.py b/faker/providers/address/en_CA/__init__.py
index 4d8963ed..7e7e989a 100644
--- a/faker/providers/address/en_CA/__init__.py
+++ b/faker/providers/address/en_CA/__init__.py
@@ -316,7 +316,7 @@ class Provider(AddressProvider):
         """
         return self.random_element(self.postal_code_letters)
 
-    def postalcode(self):
+    def postcode(self):
         """
         Replaces all question mark ('?') occurrences with a random letter
         from postal_code_formats then passes result to
@@ -326,3 +326,6 @@ class Provider(AddressProvider):
                       lambda x: self.postal_code_letter(),
                       self.random_element(self.postal_code_formats))
         return self.numerify(temp)
+    
+    def postalcode(self):
+        return self.postcode()
diff --git a/faker/providers/address/en_US/__init__.py b/faker/providers/address/en_US/__init__.py
index c15c771a..451d5d72 100644
--- a/faker/providers/address/en_US/__init__.py
+++ b/faker/providers/address/en_US/__init__.py
@@ -332,7 +332,7 @@ class Provider(AddressProvider):
     def state_abbr(self):
         return self.random_element(self.states_abbr)
 
-    def zipcode(self):
+    def postcode(self):
         return "%05d" % self.generator.random.randint(501, 99950)
 
     def zipcode_plus4(self):
@@ -364,8 +364,11 @@ class Provider(AddressProvider):
         return self.numerify(self.military_dpo_format)
 
     # Aliases
+    def zipcode(self):
+        return self.postcode()
+
     def postalcode(self):
-        return self.zipcode()
+        return self.postcode()
 
     def postalcode_plus4(self):
         return self.zipcode_plus4()
diff --git a/faker/providers/address/ja_JP/__init__.py b/faker/providers/address/ja_JP/__init__.py
index 3444e6a1..9d08197f 100644
--- a/faker/providers/address/ja_JP/__init__.py
+++ b/faker/providers/address/ja_JP/__init__.py
@@ -347,9 +347,12 @@ class Provider(AddressProvider):
         """
         return self.random_element(self.building_names)
 
-    def zipcode(self):
+    def postcode(self):
         """
         :example '101-1212'
         """
         return "%03d-%04d" % (self.generator.random.randint(0, 999),
                               self.generator.random.randint(0, 9999))
+
+    def zipcode(self):
+        return self.postcode()
diff --git a/faker/providers/address/ko_KR/__init__.py b/faker/providers/address/ko_KR/__init__.py
index 0a0ee206..956f7e11 100644
--- a/faker/providers/address/ko_KR/__init__.py
+++ b/faker/providers/address/ko_KR/__init__.py
@@ -381,8 +381,14 @@ class Provider(AddressProvider):
         """
         return self.bothify(self.random_element(self.postcode_formats))
 
-    def postal_code(self):
+    def postcode(self):
         """
         :example 12345
         """
         return self.bothify(self.random_element(self.new_postal_code_formats))
+
+    def postal_code(self):
+        """
+        :example 12345
+        """
+        return self.postcode()

en_CA should implement postcode, not postalcode
All of the address providers use `postcode` to generate post codes. This is misspelled as `postalcode` by the localization for `en_CA`. 


### Expected behavior

It would be easier to use faker in a multilingual context if this were spelled consistently.

Recommended fix: provide a courtesy alias definition of `postcode` so that CA works the same as everyone else. Perhaps `postalcode` should be deprecated, too.

### Actual behavior

```bash
$ grep -r "{{postalcode}}" * | grep -v ".pyc"
providers/address/en_CA/__init__.py:        "{{street_address}}\n{{city}}, {{province_abbr}} {{postalcode}}",


$ grep -r "{{postcode}}" * | grep -v ".pyc"
providers/address/fa_IR/__init__.py:        "{{street_address}}\n{{city}}, {{state}} {{postcode}}",
providers/address/fi_FI/__init__.py:    address_formats = ("{{street_address}}\n{{postcode}} {{city}}", )
providers/address/nl_BE/__init__.py:        "{{street_address}}\n{{postcode}}\n{{city}}",
providers/address/nl_BE/__init__.py:        "{{street_address}}\n{{postcode}} {{city}}",
providers/address/sk_SK/__init__.py:    address_formats = ('{{street_address}}\n{{postcode}} {{city}}', )
providers/address/uk_UA/__init__.py:    address_formats = ['{{street_address}}, {{city}}, {{postcode}}']
providers/address/en_US/__init__.py:        "{{street_address}}\n{{city}}, {{state_abbr}} {{postcode}}",
providers/address/en_US/__init__.py:        ("{{street_address}}\n{{city}}, {{state_abbr}} {{postcode}}", 25),
providers/address/en_US/__init__.py:        ("{{military_apo}}\nAPO {{military_state}} {{postcode}}", 1),
providers/address/en_US/__init__.py:        ("{{military_ship}} {{last_name}}\nFPO {{military_state}} {{postcode}}", 1),
providers/address/en_US/__init__.py:        ("{{military_dpo}}\nDPO {{military_state}} {{postcode}}", 1),
providers/address/ne_NP/__init__.py:        "{{street_name}} {{building_prefix}} {{building_number}} \n{{city}}\n{{district}} {{postcode}}",
providers/address/sv_SE/__init__.py:    address_formats = ("{{street_address}}\n{{postcode}} {{city}}", )
providers/address/id_ID/__init__.py:        '{{street_address}}\n{{city}}, {{state}} {{postcode}}',
providers/address/id_ID/__init__.py:        '{{street_address}}\n{{city}}, {{state_abbr}} {{postcode}}',
providers/address/pt_BR/__init__.py:        "{{street_address}}\n{{bairro}}\n{{postcode}} {{city}} / {{estado_sigla}}", )
providers/address/it_IT/__init__.py:        "{{street_address}}\n{{city}}, {{postcode}} {{state}} ({{state_abbr}})",
providers/address/zh_TW/__init__.py:        "{{postcode}} {{city}}{{street_address}}{{secondary_address}}", )
providers/address/pt_PT/__init__.py:        "{{street_address}}\n{{postcode}} {{city}}",
providers/address/hr_HR/__init__.py:    address_formats = ('{{street_address}}\n{{postcode}} {{city}}', )
providers/address/cs_CZ/__init__.py:    address_formats = ('{{street_address}}\n{{postcode}} {{city}}', )
providers/address/__init__.py:    address_formats = ('{{street_address}} {{postcode}} {{city}}', )
providers/address/fr_CH/__init__.py:    address_formats = ("{{street_address}}\n{{postcode}} {{city}}",)
providers/address/he_IL/__init__.py:    address_formats = ('{{street_address}}, {{city}}, {{postcode}}', )
providers/address/hi_IN/__init__.py:    address_formats = ('{{street_address}}\n{{city}} {{postcode}}',
providers/address/hi_IN/__init__.py:                       '{{street_address}}\n{{city}}-{{postcode}}',)
providers/address/sl_SI/__init__.py:    address_formats = ('{{street_address}}\n{{postcode}} {{city}}', )
providers/address/zh_CN/__init__.py:        "{{province}}{{city}}{{district}}{{street_address}} {{postcode}}",)
providers/address/nl_NL/__init__.py:        "{{street_address}}\n{{postcode}}\n{{city}}",
providers/address/hu_HU/__init__.py:    address_formats = ("{{street_address}}\n{{postcode}} {{city}}",)
providers/address/en_AU/__init__.py:        "{{street_address}}\n{{city}}, {{state_abbr}}, {{postcode}}", )
providers/address/en_GB/__init__.py:        "{{street_address}}\n{{city}}\n{{postcode}}",
providers/address/es_MX/__init__.py:        "{{street_address}}\n{{city}}, {{state_abbr}} {{postcode}}",
providers/address/ru_RU/__init__.py:    address_formats = ('{{city}}, {{street_address}}, {{postcode}}', )
providers/address/es_ES/__init__.py:        "{{street_address}}\n{{city}}, {{postcode}}",
providers/address/el_GR/__init__.py:        "{{street_address}},\n{{postcode}} {{city}}",
providers/address/el_GR/__init__.py:        "{{street_address}}, {{postcode}} {{city}}",
providers/address/no_NO/__init__.py:    address_formats = ('{{street_address}}, {{postcode}} {{city}}',)
providers/address/pl_PL/__init__.py:        "{{street_address}}\n{{postcode}} {{city}}",
providers/address/fr_FR/__init__.py:        "{{street_address}}\n{{postcode}} {{city}}",
providers/address/de_AT/__init__.py:    address_formats = ('{{street_address}}\n{{postcode}} {{city}}', )
providers/address/de_DE/__init__.py:    address_formats = ('{{street_address}}\n{{postcode}} {{city}}', )


```
diff --git a/tests/providers/test_address.py b/tests/providers/test_address.py
index e7385664..585e0869 100644
--- a/tests/providers/test_address.py
+++ b/tests/providers/test_address.py
@@ -230,6 +230,12 @@ class TestEnCA(unittest.TestCase):
     def setUp(self):
         self.factory = Faker('en_CA')
 
+    def test_postcode(self):
+        for _ in range(100):
+            postcode = self.factory.postcode()
+            assert re.match("[A-Z][0-9][A-Z] ?[0-9][A-Z][0-9]",
+                            postcode)
+
     def test_postalcode(self):
         for _ in range(100):
             postalcode = self.factory.postalcode()
@@ -292,6 +298,11 @@ class TestEnUS(unittest.TestCase):
         assert isinstance(state_abbr, string_types)
         assert state_abbr in EnUsProvider.states_abbr
 
+    def test_postcode(self):
+        for _ in range(100):
+            postcode = self.factory.postcode()
+            assert re.match("\d{5}", postcode)
+
     def test_zipcode(self):
         for _ in range(100):
             zipcode = self.factory.zipcode()
@@ -420,6 +431,10 @@ class TestJaJP(unittest.TestCase):
         assert isinstance(building_name, string_types)
         assert building_name in JaProvider.building_names
 
+        postcode = self.factory.postcode()
+        assert isinstance(postcode, string_types)
+        assert re.match("\d{3}-\d{4}", postcode)
+
         zipcode = self.factory.zipcode()
         assert isinstance(zipcode, string_types)
         assert re.match("\d{3}-\d{4}", zipcode)
@@ -428,6 +443,26 @@ class TestJaJP(unittest.TestCase):
         assert isinstance(address, string_types)
 
 
+class TestKoKR(unittest.TestCase):
+    """ Tests addresses in the ko_KR locale """
+
+    def setUp(self):
+        self.factory = Faker('ko_KR')
+
+    def test_address(self):
+        postcode = self.factory.postcode()
+        assert isinstance(postcode, string_types)
+        assert re.match("\d{5}", postcode)
+
+        postal_code = self.factory.postal_code()
+        assert isinstance(postal_code, string_types)
+        assert re.match("\d{5}", postal_code)
+
+        old_postal_code = self.factory.old_postal_code()
+        assert isinstance(old_postal_code, string_types)
+        assert re.match("\d{3}-\d{3}", old_postal_code)
+
+
 class TestNeNP(unittest.TestCase):
     """ Tests addresses in the ne_NP locale """
 

pip install -e .[dev]
parse_log_pytest
requirements.txt
pytest pytest-cov
apt-get update apt-get install -y gcc
3.6
tests/requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
attrs==22.2.0
certifi==2021.5.30
coverage==6.2
dnspython==2.2.1
email-validator==1.0.3
-e git+https://github.com/joke2k/faker.git@29dff0a0f2a31edac21a18cfa50b5bc9206304b2#egg=Faker
idna==3.10
importlib-metadata==4.8.3
iniconfig==1.1.1
mock==2.0.0
packaging==21.3
pbr==6.1.1
pluggy==1.0.0
py==1.11.0
pyparsing==3.1.4
pytest==7.0.1
pytest-cov==4.0.0
python-dateutil==2.9.0.post0
six==1.17.0
text-unidecode==1.2
tomli==1.2.3
typing_extensions==4.1.1
UkPostcodeParser==1.1.2
zipp==3.6.0

name: faker
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2021.5.30=py36h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.3=he6710b0_2
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=21.2.2=py36h06a4308_0
  - python=3.6.13=h12debd9_1
  - readline=8.2=h5eee18b_0
  - setuptools=58.0.4=py36h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.37.1=pyhd3eb1b0_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - attrs==22.2.0
      - coverage==6.2
      - dnspython==2.2.1
      - email-validator==1.0.3
      - idna==3.10
      - importlib-metadata==4.8.3
      - iniconfig==1.1.1
      - mock==2.0.0
      - packaging==21.3
      - pbr==6.1.1
      - pluggy==1.0.0
      - py==1.11.0
      - pyparsing==3.1.4
      - pytest==7.0.1
      - pytest-cov==4.0.0
      - python-dateutil==2.9.0.post0
      - six==1.17.0
      - text-unidecode==1.2
      - tomli==1.2.3
      - typing-extensions==4.1.1
      - ukpostcodeparser==1.1.2
      - zipp==3.6.0
prefix: /opt/conda/envs/faker

tests/providers/test_address.py::TestEnCA::test_postcode tests/providers/test_address.py::TestJaJP::test_address tests/providers/test_address.py::TestKoKR::test_address
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::TestAr_AA::test_alpha_2_country_codes tests/providers/test_address.py::TestAr_AA::test_alpha_2_country_codes_as_default tests/providers/test_address.py::TestAr_AA::test_alpha_3_country_codes tests/providers/test_address.py::TestAr_AA::test_bad_country_code_representation tests/providers/test_address.py::TestDeAT::test_city tests/providers/test_address.py::TestDeAT::test_country tests/providers/test_address.py::TestDeAT::test_latitude tests/providers/test_address.py::TestDeAT::test_longitude tests/providers/test_address.py::TestDeAT::test_postcode tests/providers/test_address.py::TestDeAT::test_state tests/providers/test_address.py::TestDeAT::test_street_suffix_long tests/providers/test_address.py::TestDeAT::test_street_suffix_short tests/providers/test_address.py::TestDeDE::test_city tests/providers/test_address.py::TestDeDE::test_country tests/providers/test_address.py::TestDeDE::test_state tests/providers/test_address.py::TestDeDE::test_street_suffix_long tests/providers/test_address.py::TestDeDE::test_street_suffix_short tests/providers/test_address.py::TestFiFI::test_city tests/providers/test_address.py::TestFiFI::test_street_suffix tests/providers/test_address.py::TestElGR::test_city tests/providers/test_address.py::TestElGR::test_latlng tests/providers/test_address.py::TestElGR::test_line_address tests/providers/test_address.py::TestElGR::test_region tests/providers/test_address.py::TestEnAU::test_city_prefix tests/providers/test_address.py::TestEnAU::test_postcode tests/providers/test_address.py::TestEnAU::test_state tests/providers/test_address.py::TestEnAU::test_state_abbr tests/providers/test_address.py::TestEnCA::test_city_prefix tests/providers/test_address.py::TestEnCA::test_postal_code_letter tests/providers/test_address.py::TestEnCA::test_postalcode tests/providers/test_address.py::TestEnCA::test_province tests/providers/test_address.py::TestEnCA::test_province_abbr tests/providers/test_address.py::TestEnCA::test_secondary_address tests/providers/test_address.py::TestEnGB::test_postcode tests/providers/test_address.py::TestEnUS::test_city_prefix 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_military_ship tests/providers/test_address.py::TestEnUS::test_military_state tests/providers/test_address.py::TestEnUS::test_postcode tests/providers/test_address.py::TestEnUS::test_state tests/providers/test_address.py::TestEnUS::test_state_abbr tests/providers/test_address.py::TestEnUS::test_zipcode tests/providers/test_address.py::TestEnUS::test_zipcode_plus4 tests/providers/test_address.py::TestHuHU::test_address tests/providers/test_address.py::TestHuHU::test_postcode_first_digit tests/providers/test_address.py::TestHuHU::test_street_address tests/providers/test_address.py::TestHuHU::test_street_address_with_county tests/providers/test_address.py::TestNeNP::test_address tests/providers/test_address.py::TestNoNO::test_address tests/providers/test_address.py::TestNoNO::test_city_suffix tests/providers/test_address.py::TestNoNO::test_postcode tests/providers/test_address.py::TestNoNO::test_street_suffix tests/providers/test_address.py::TestZhTW::test_address tests/providers/test_address.py::TestZhCN::test_address tests/providers/test_address.py::TestPtBr::test_address tests/providers/test_address.py::TestPtPT::test_distrito tests/providers/test_address.py::TestPtPT::test_freguesia
faker/providers/address/ja_JP/__init__.py faker/providers/address/ko_KR/__init__.py faker/providers/address/en_CA/__init__.py faker/providers/address/en_US/__init__.py
faker/providers/address/ja_JP/__init__.py faker/providers/address/ko_KR/__init__.py faker/providers/address/en_CA/__init__.py faker/providers/address/en_US/__init__.py