Country Information

CountryUnited States
ISO CodeUS / USA
LanguageEnglish
Total Records42,605

United States uses a numeric code of 5 (or 5+4) digits (e.g. 10001). ZIP Code (5 digits) with optional ZIP+4 extension.

This database currently holds 42,605 ZIP Codes ranging from 00501 to 99929, linked to 0 building and address records. Because a single ZIP Code can cover more than one locality or delivery point, the lookup below groups addresses by code and lets you drill into the individual records.

Postal codes matter well beyond mail delivery. Couriers, e-commerce checkout forms and address autocomplete tools rely on the ZIP Code to route a parcel and to verify that the stated address matches the code. Addresses here are organised as State → County → City. The code itself is structured as ZIP Code → ZIP+4 → Delivery Point, which is postal geography and not the same as the administrative hierarchy. When you look up a code here, treat the associated name as a reference point rather than a full postal address — always confirm the street and house number with the sender or recipient before shipping.

Data source: a third-party open dataset. This is an imported reference dataset, not a live government feed; CodeReff does not independently verify each record, so codes may have changed since the snapshot was taken. Use the search box to look up a specific code, or browse the paginated table below.

United States Postcode Data

42,605 postcode found

Postal Code State County City Records
58735 North Dakota Ward Douglas 1
58736 North Dakota McHenry Drake 1
58737 North Dakota Burke Flaxton 1
58740 North Dakota Renville Glenburn 1
58741 North Dakota McHenry Granville 1
58744 North Dakota McHenry Karlsruhe 1
58746 North Dakota Ward Kenmare 1
58747 North Dakota Sheridan Kief 1
58748 North Dakota Bottineau Kramer 1
58750 North Dakota Bottineau Lansford 1
58752 North Dakota Burke Lignite 1
58755 North Dakota Williams McGregor 1
58756 North Dakota Ward Makoti 1
58757 North Dakota McKenzie Mandaree 1
58758 North Dakota Sheridan Martin 1
58759 North Dakota McLean Max 1
58760 North Dakota Bottineau Maxbass 1
58761 North Dakota Renville Mohall 1
58762 North Dakota Bottineau Newburg 1
58763 North Dakota Mountrail New Town 1
58765 North Dakota Divide Noonan 1
58768 North Dakota McHenry Norwich 1
58769 North Dakota Mountrail Palermo 1
58770 North Dakota Mountrail Parshall 1
58771 North Dakota Mountrail Plaza 1
58772 North Dakota Burke Portal 1
58773 North Dakota Burke Powers Lake 1
58775 North Dakota McLean Roseglen 1
58776 North Dakota Mountrail Ross 1
58778 North Dakota McLean Ruso 1
58779 North Dakota Ward Ryder 1
58781 North Dakota Ward Sawyer 1
58782 North Dakota Renville Sherwood 1
58783 North Dakota Bottineau Souris 1
58784 North Dakota Mountrail Stanley 1
58785 North Dakota Ward Surrey 1
58787 North Dakota Renville Tolley 1
58788 North Dakota McHenry Towner 1
58789 North Dakota McHenry Upham 1
58790 North Dakota McHenry Velva 1
58792 North Dakota McHenry Voltaire 1
58793 North Dakota Bottineau Westhope 1
58794 North Dakota Mountrail White Earth 1
58795 North Dakota Williams Wildrose 1
58801 North Dakota Williams Williston 1
58802 North Dakota Williams Williston 1
58830 North Dakota Williams Alamo 1
58831 North Dakota McKenzie Alexander 1
58833 North Dakota Divide Ambrose 1
58835 North Dakota McKenzie Arnegard 1

Postcodes by Region

Postcodes by City

Frequently Asked Questions

United States uses a numeric code of 5 (or 5+4) digits (e.g. 10001). ZIP Code (5 digits) with optional ZIP+4 extension.
Yes. United States postal codes are a plain numeric string, so a leading zero is part of the code itself. A code beginning with 0 must be written and stored with that zero — it is not the same as the same digits without it.
42,605 This database currently lists
The records are imported from a third-party open dataset, an open reference dataset. CodeReff does not independently verify each entry, so use the information as a reference rather than an official confirmation.
Enter a full or partial postal code, or a building or street name, in the search box above. You can also browse the paginated table and open any code to see its building and address records.
Information provided on CodeReff is for reference purposes only. Always verify financial and banking details with the relevant institution before use.