ZIP Code 53128 — Genoa City, WI
53128 is a standard (street delivery) ZIP code serving Genoa City, Wisconsin, in Walworth County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 53128 at a glance
| ZIP code | 53128 |
|---|---|
| Primary city | Genoa City |
| State | Wisconsin (WI) |
| County | Walworth FIPS 55127 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 9,030 |
| Coordinates | 42.529790, -88.338570 |
How ZIP+4 works in 53128
The four digits after the hyphen encode a delivery segment inside 53128. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 53128 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 53128.
| ZIP | City | Distance |
|---|---|---|
| 53157 | Pell Lake, WI | 1.6 mi |
| 60071 | Richmond, IL | 4.8 mi |
| 53181 | Twin Lakes, WI | 4.9 mi |
| 53147 | Lake Geneva, WI | 6.3 mi |
| 60034 | Hebron, IL | 6.6 mi |
| 53195 | Zenda, WI | 7.8 mi |
| 53192 | Wilmot, WI | 8 mi |
| 60081 | Spring Grove, IL | 8 mi |
| 53176 | Springfield, WI | 8.7 mi |
| 60072 | Ringwood, IL | 8.7 mi |
| 53170 | Silver Lake, WI | 9.1 mi |
| 60097 | Wonder Lake, IL | 9.5 mi |
Questions about 53128
What is the ZIP+4 code for 53128?
53128 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 53128, you need to look up a specific street address to get them.
What city is 53128?
53128 is assigned to Genoa City, Wisconsin, in Walworth County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.