diff --git a/app/models/setting.rb b/app/models/setting.rb
index 8c813dcc2..0488c2d2d 100644
--- a/app/models/setting.rb
+++ b/app/models/setting.rb
@@ -177,7 +177,7 @@ class Setting < ApplicationRecord
         "machine_learning.comments_summary": false,
         "machine_learning.related_content": false,
         "machine_learning.tags": false,
-        "postal_codes": "00001-99999",
+        "postal_codes": "00001:99999",
         "remote_census.general.endpoint": "",
         "remote_census.request.method_name": "",
         "remote_census.request.structure": "",
diff --git a/app/models/verification/residence.rb b/app/models/verification/residence.rb
index 384bbe474..d254ccaa6 100644
--- a/app/models/verification/residence.rb
+++ b/app/models/verification/residence.rb
@@ -105,8 +105,8 @@ class Verification::Residence
 
     def valid_postal_code?
       Setting["postal_codes"].split(",").any? do |code_or_range|
-        if code_or_range.include?("-")
-          Range.new(*code_or_range.split("-")).include?(postal_code)
+        if code_or_range.include?(":")
+          Range.new(*code_or_range.split(":")).include?(postal_code)
         else
           postal_code == code_or_range
         end
diff --git a/config/locales/en/settings.yml b/config/locales/en/settings.yml
index d94498cbf..0e8d1218b 100644
--- a/config/locales/en/settings.yml
+++ b/config/locales/en/settings.yml
@@ -61,6 +61,7 @@ en:
     min_age_to_participate: Minimum age needed to participate
     min_age_to_participate_description: "Users over this age can participate in all processes where a user verified account is needed"
     postal_codes: "Postal Codes"
+    postal_codes_description: "A comma-separated list of valid postal codes; you can also introduce ranges separated with a colon. Example: 00001:00010,00024,AB3 45FG,00031:00035 will allow postal codes between 00001 and 00010, the postal code 00024, the postal code AB3 45FG, and postal codes between 00031 and 00035."
     proposals:
       successful_proposal_id: Successful proposal
       successful_proposal_id_description: This proposal is used as a reference for a successful proposal in supports number and will be displayed in the dashboard graph.
diff --git a/config/locales/es/settings.yml b/config/locales/es/settings.yml
index d37261848..631ef0603 100644
--- a/config/locales/es/settings.yml
+++ b/config/locales/es/settings.yml
@@ -61,6 +61,7 @@ es:
     min_age_to_participate: Edad mínima para participar
     min_age_to_participate_description: "Los usuarios mayores de esta edad podrán participar en todos los procesos donde se necesite una cuenta verificada"
     postal_codes: "Códigos Postales"
+    postal_codes_description: "Una lista de códigos postales válidos separados por comas; también puedes usar rangos utilizando \":\". Ejemplo: 00001:00010,00024,AB3 45FG,00031:00035 permitirá códigos postales entre 00001 y 00010, el 00024, el AB3 45FG, y códigos postales entre 00031 y 00035."
     proposals:
       successful_proposal_id: Propuesta exitosa
       successful_proposal_id_description: Esta propuesta se utiliza como referencia de una propuesta exitosa en número de apoyos y se mostrará en el gráfico del panel de control
diff --git a/spec/models/verification/residence_spec.rb b/spec/models/verification/residence_spec.rb
index 895ea89bf..cdfee621b 100644
--- a/spec/models/verification/residence_spec.rb
+++ b/spec/models/verification/residence_spec.rb
@@ -49,7 +49,7 @@ describe Verification::Residence do
 
     describe "postal code" do
       before do
-        Setting["postal_codes"] = "28001-28100,28200"
+        Setting["postal_codes"] = "28001:28100,28200,28303-455"
 
         census_data = double(valid?: true, district_code: "", gender: "")
         allow(census_data).to receive(:postal_code) { residence.postal_code }
@@ -69,6 +69,9 @@ describe Verification::Residence do
 
         residence.postal_code = "28200"
         expect(residence).to be_valid
+
+        residence.postal_code = "28303-455"
+        expect(residence).to be_valid
       end
 
       it "uses string ranges and not integer ranges" do
@@ -102,6 +105,12 @@ describe Verification::Residence do
         residence.postal_code = "28000"
         expect(residence).not_to be_valid
 
+        residence.postal_code = "28303-454"
+        expect(residence).not_to be_valid
+
+        residence.postal_code = "28303"
+        expect(residence).not_to be_valid
+
         residence.postal_code = "28101"
         expect(residence).not_to be_valid
         expect(residence.errors.count).to eq 1