ZIP Code 23146 — Rockville, VA
23146 is a standard (street delivery) ZIP code serving Rockville, Virginia, in Hanover 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 23146 at a glance
| ZIP code | 23146 |
|---|---|
| Primary city | Rockville |
| State | Virginia (VA) |
| County | Hanover FIPS 51085 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 3,451 |
| Coordinates | 37.727300, -77.709280 |
How ZIP+4 works in 23146
The four digits after the hyphen encode a delivery segment inside 23146. 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 23146 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 23146.
| ZIP | City | Distance |
|---|---|---|
| 23129 | Oilville, VA | 4.3 mi |
| 23103 | Manakin Sabot, VA | 5.4 mi |
| 23192 | Montpelier, VA | 6.4 mi |
| 23102 | Maidens, VA | 6.9 mi |
| 23233 | Henrico, VA | 7.2 mi |
| 23039 | Crozier, VA | 7.3 mi |
| 23059 | Glen Allen, VA | 8 mi |
| 23238 | Henrico, VA | 9.8 mi |
| 23160 | State Farm, VA | 9.9 mi |
| 23060 | Glen Allen, VA | 10.6 mi |
| 23294 | Henrico, VA | 11.3 mi |
| 23229 | Henrico, VA | 12.3 mi |
Questions about 23146
What is the ZIP+4 code for 23146?
23146 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 23146, you need to look up a specific street address to get them.
What city is 23146?
23146 is assigned to Rockville, Virginia, in Hanover 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.