diff --git a/src/registrar/forms/domain.py b/src/registrar/forms/domain.py
index 84fcbe973..5a239af2f 100644
--- a/src/registrar/forms/domain.py
+++ b/src/registrar/forms/domain.py
@@ -35,7 +35,10 @@ class DomainAddUserForm(forms.Form):
     email = forms.EmailField(
         label="Email",
         max_length=None,
-        error_messages={"invalid": ("Enter your email address in the required format, like name@example.com.")},
+        error_messages={
+            "invalid": ("Enter an email address in the required format, like name@example.com."),
+            "required": ("Enter an email address in the required format, like name@example.com."),
+        },
         validators=[
             MaxLengthValidator(
                 320,
@@ -285,7 +288,7 @@ class UserForm(forms.ModelForm):
             "required": "Enter your title or role in your organization (e.g., Chief Information Officer)"
         }
         self.fields["email"].error_messages = {
-            "required": "Enter your email address in the required format, like name@example.com."
+            "required": "Enter an email address in the required format, like name@example.com."
         }
         self.fields["phone"].error_messages["required"] = "Enter your phone number."
         self.domainInfo = None
@@ -342,7 +345,7 @@ class ContactForm(forms.ModelForm):
             "required": "Enter your title or role in your organization (e.g., Chief Information Officer)"
         }
         self.fields["email"].error_messages = {
-            "required": "Enter your email address in the required format, like name@example.com."
+            "required": "Enter an email address in the required format, like name@example.com."
         }
         self.fields["phone"].error_messages["required"] = "Enter your phone number."
         self.domainInfo = None
@@ -458,9 +461,12 @@ class DomainOrgNameAddressForm(forms.ModelForm):
         validators=[
             RegexValidator(
                 "^[0-9]{5}(?:-[0-9]{4})?$|^$",
-                message="Enter a zip code in the required format, like 12345 or 12345-6789.",
+                message="Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.",
             )
         ],
+        error_messages={
+            "required": "Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.",
+        },
     )
 
     class Meta:
diff --git a/src/registrar/forms/domain_request_wizard.py b/src/registrar/forms/domain_request_wizard.py
index 6b160b14d..f8ac85140 100644
--- a/src/registrar/forms/domain_request_wizard.py
+++ b/src/registrar/forms/domain_request_wizard.py
@@ -144,10 +144,10 @@ class OrganizationContactForm(RegistrarForm):
         validators=[
             RegexValidator(
                 "^[0-9]{5}(?:-[0-9]{4})?$|^$",
-                message="Enter a zip code in the form of 12345 or 12345-6789.",
+                message="Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.",
             )
         ],
-        error_messages={"required": ("Enter a zip code in the form of 12345 or 12345-6789.")},
+        error_messages={"required": ("Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.")},
     )
     urbanization = forms.CharField(
         required=False,
@@ -233,7 +233,10 @@ class SeniorOfficialForm(RegistrarForm):
     email = forms.EmailField(
         label="Email",
         max_length=None,
-        error_messages={"invalid": ("Enter an email address in the required format, like name@example.com.")},
+        error_messages={
+            "invalid": ("Enter an email address in the required format, like name@example.com."),
+            "required": ("Enter an email address in the required format, like name@example.com."),
+        },
         validators=[
             MaxLengthValidator(
                 320,
@@ -610,7 +613,8 @@ class CisaRepresentativeForm(BaseDeletableRegistrarForm):
         max_length=None,
         required=False,
         error_messages={
-            "invalid": ("Enter your representative’s email address in the required format, like name@example.com."),
+            "invalid": ("Enter an email address in the required format, like name@example.com."),
+            "required": ("Enter an email address in the required format, like name@example.com."),
         },
         validators=[
             MaxLengthValidator(
diff --git a/src/registrar/forms/portfolio.py b/src/registrar/forms/portfolio.py
index 14a45f6ae..999d76d51 100644
--- a/src/registrar/forms/portfolio.py
+++ b/src/registrar/forms/portfolio.py
@@ -17,9 +17,12 @@ class PortfolioOrgAddressForm(forms.ModelForm):
         validators=[
             RegexValidator(
                 "^[0-9]{5}(?:-[0-9]{4})?$|^$",
-                message="Enter a zip code in the required format, like 12345 or 12345-6789.",
+                message="Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.",
             )
         ],
+        error_messages={
+            "required": "Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.",
+        },
     )
 
     class Meta:
@@ -38,6 +41,7 @@ class PortfolioOrgAddressForm(forms.ModelForm):
             "state_territory": {
                 "required": "Select the state, territory, or military post where your organization is located."
             },
+            "zipcode": {"required": "Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789."},
         }
         widgets = {
             # We need to set the required attributed for State/territory
diff --git a/src/registrar/forms/user_profile.py b/src/registrar/forms/user_profile.py
index 2a6ed4a47..8d8e2973d 100644
--- a/src/registrar/forms/user_profile.py
+++ b/src/registrar/forms/user_profile.py
@@ -58,7 +58,7 @@ class UserProfileForm(forms.ModelForm):
             "required": "Enter your title or role in your organization (e.g., Chief Information Officer)"
         }
         self.fields["email"].error_messages = {
-            "required": "Enter your email address in the required format, like name@example.com."
+            "required": "Enter an email address in the required format, like name@example.com."
         }
         self.fields["phone"].error_messages["required"] = "Enter your phone number."
 
diff --git a/src/registrar/templates/domain_org_name_address.html b/src/registrar/templates/domain_org_name_address.html
index 78baed09e..0785b6da1 100644
--- a/src/registrar/templates/domain_org_name_address.html
+++ b/src/registrar/templates/domain_org_name_address.html
@@ -42,7 +42,7 @@
 
     {% input_with_errors form.state_territory %}
 
-    {% with add_class="usa-input--small" sublabel_text="Enter a zip code in the required format, like 12345 or 12345-6789." %}
+    {% with add_class="usa-input--small" sublabel_text="Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789." %}
       {% input_with_errors form.zipcode %}
     {% endwith %}
 
diff --git a/src/registrar/templates/domain_request_org_contact.html b/src/registrar/templates/domain_request_org_contact.html
index d4f3c2071..44b404bbf 100644
--- a/src/registrar/templates/domain_request_org_contact.html
+++ b/src/registrar/templates/domain_request_org_contact.html
@@ -33,7 +33,7 @@
 
     {% input_with_errors forms.0.state_territory %}
 
-    {% with add_class="usa-input--small" sublabel_text="Enter a zip code in the required format, like 12345 or 12345-6789." %}
+    {% with add_class="usa-input--small" sublabel_text="Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789." %}
       {% input_with_errors forms.0.zipcode %}
     {% endwith %}
 
diff --git a/src/registrar/templates/portfolio_organization.html b/src/registrar/templates/portfolio_organization.html
index 2e6a1f488..712d1a6ca 100644
--- a/src/registrar/templates/portfolio_organization.html
+++ b/src/registrar/templates/portfolio_organization.html
@@ -45,7 +45,7 @@
                 {% input_with_errors form.address_line2 %}
                 {% input_with_errors form.city %}
                 {% input_with_errors form.state_territory %}
-                {% with add_class="usa-input--small" sublabel_text="Enter a zip code in the required format, like 12345 or 12345-6789." %}
+                {% with add_class="usa-input--small" sublabel_text="Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789." %}
                     {% input_with_errors form.zipcode %}
                 {% endwith %}
                 <button type="submit" class="usa-button">
diff --git a/src/registrar/tests/test_forms.py b/src/registrar/tests/test_forms.py
index eb4cad040..12d9af8ac 100644
--- a/src/registrar/tests/test_forms.py
+++ b/src/registrar/tests/test_forms.py
@@ -33,7 +33,7 @@ class TestFormValidation(MockEppLib):
         form = OrganizationContactForm(data={"zipcode": "nah"})
         self.assertEqual(
             form.errors["zipcode"],
-            ["Enter a zip code in the form of 12345 or 12345-6789."],
+            ["Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789."],
         )
 
     def test_org_contact_zip_valid(self):
diff --git a/src/registrar/utility/errors.py b/src/registrar/utility/errors.py
index 8cb83c0ee..cfa6a537b 100644
--- a/src/registrar/utility/errors.py
+++ b/src/registrar/utility/errors.py
@@ -240,7 +240,7 @@ class SecurityEmailError(Exception):
     """
 
     _error_mapping = {
-        SecurityEmailErrorCodes.BAD_DATA: ("Enter an email address in the required format, " "like name@example.com."),
+        SecurityEmailErrorCodes.BAD_DATA: ("Enter an email address in the required format, like name@example.com."),
     }
 
     def __init__(self, *args, code=None, **kwargs):