First digit (zoomed out)
US ZIP code map
Zoom in for outlines and numbers. Tap a ZIP for its card, or color the whole map by data.
Color the map by
Collect mode
Tap ZIPs to build a list you can copy.
Jump to a region by first digit
Famous ZIP codes
A map you can poke
Every ZIP boundary in the country loads as you move, straight in your browser.
- 1
Search or zoom
Type a ZIP, a city or a street address, or just zoom in. Outlines and numbers appear once you’re past state level. - 2
Tap any ZIP
Its card opens with city, county split, population, age, income and how it ranks against every other ZIP in the US. - 3
Color the map
Switch from outlines to density, income or median age and the whole country repaints, ZIP by ZIP.
The whole country, ZIP by ZIP
33,791
ZIP areas with a boundary
Census ZCTAs, 2020
930
3-digit ZIP regions
the colored blocks when zoomed out
2,656
people in the median ZIP
ACS 2020–2024
163,590
people per sq mi in 10028
the densest ZIP, Upper East Side
Read a ZIP like a mail sorter
The first digit is a group of states, the first three a sorting center, the last two a local delivery area.
- 9
First digit: one of 10 national areas
9 is Pacific: AK, CA, HI, OR, WA, GU. Numbers start at 0 in the Northeast and climb to 9 on the Pacific.
- 902
First three: the mail processing region
All ZIPs that share their first three digits are sorted at the same regional facility.
- 10
Last two: the local delivery area
The post office or delivery zone within that region. ZIP+4 adds a block, a building or a PO Box group on top.
Why ZIP maps are approximate
A ZIP code is a list of delivery routes run from a post office, not a shape. The Postal Service changes routes when new streets go in and doesn’t publish boundaries. To make ZIPs mappable, the Census Bureau builds ZIP Code Tabulation Areas from census blocks: each block gets the ZIP most of its addresses use.
- Near an edge, a few homes can use a different ZIP than the map shows.
- ZIPs created after 2020 aren’t drawn yet; they appear as points.
- PO Box and single-building ZIPs, like 10118 for the Empire State Building, never get an area.
For a mailing address, the USPS ZIP Code lookup is final. For where you are right now, find your ZIP code with your phone’s location.
Questions people actually ask
How do I see ZIP code boundaries on a map?
Zoom in anywhere on the map above, past state level, and every ZIP code area shows its outline and number. Tap one for its card: city, county, population, median age and the ZIPs next door. Searching a ZIP flies straight to it.
Why are the ZIPs colored by their first digit?
Zoomed out, the map paints each 3-digit ZIP region by its first digit, from 0 in New England to 9 on the West Coast. It shows how the Postal Service numbered the country, roughly east to west. Zoom in and the colors give way to individual ZIP outlines.
Can I make a map of several ZIP codes?
Yes. Turn on Collect mode, then tap ZIPs to add them. They light up in orange, and you can copy the list in one click. To grab every ZIP in an area at once, use the radius map instead.
What do the density, income and age colors show?
Each ZIP area is shaded by people per square mile, median household income or median age, from the Census Bureau’s American Community Survey 2020–2024 5-year estimates. Small ZIPs have wide margins of error, so treat close values as a tie.
Are these the official USPS ZIP code boundaries?
USPS doesn’t publish ZIP boundaries; ZIPs are delivery routes, not areas. The outlines here are the Census Bureau’s ZIP Code Tabulation Areas (2020), the standard public stand-in. They match USPS for almost every home, but edges and new ZIPs can differ.
Why can’t I find some ZIP codes on the map?
About 7,800 ZIPs are PO Box, single-building or organization ZIPs with no delivery area, so they have no outline. Search them and the map flies to the post office they’re delivered from, marked as a point.
Keep exploring
Updated 2026-11-10 · Where the data comes from