ZIP Code 60102 — Algonquin, IL
60102 is a standard (street delivery) ZIP code serving Algonquin, Illinois, in McHenry 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 60102 at a glance
| ZIP code | 60102 |
|---|---|
| Primary city | Algonquin |
| State | Illinois (IL) |
| County | McHenry FIPS 17111 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 32,286 |
| Coordinates | 42.164060, -88.309280 |
How ZIP+4 works in 60102
The four digits after the hyphen encode a delivery segment inside 60102. 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 60102 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 60102.
| ZIP | City | Distance |
|---|---|---|
| 60156 | Lake In The Hills, IL | 2.7 mi |
| 60110 | Carpentersville, IL | 3 mi |
| 60118 | Dundee, IL | 3.9 mi |
| 60014 | Crystal Lake, IL | 4.7 mi |
| 60021 | Fox River Grove, IL | 5.2 mi |
| 60136 | Gilberts, IL | 5.4 mi |
| 60013 | Cary, IL | 5.4 mi |
| 60142 | Huntley, IL | 7 mi |
| 60012 | Crystal Lake, IL | 7.4 mi |
| 60010 | Barrington, IL | 7.4 mi |
| 60123 | Elgin, IL | 8.6 mi |
| 60192 | Hoffman Estates, IL | 9.6 mi |
Questions about 60102
What is the ZIP+4 code for 60102?
60102 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 60102, you need to look up a specific street address to get them.
What city is 60102?
60102 is assigned to Algonquin, Illinois, in McHenry 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.