ZIP Code: 91310 - CASTAIC, CA
ZIP Code 91310 is assigned to CASTAIC, CA. In addition to basic details, this page includes the full ZIP+4 Codes and address information for ZIP Code 91310. You can also find related data, such as nearby ZIP Codes and other relevant geographic details.
ZIP Code 91310 Basic Information
| State | County | City | ZIP Code |
|---|---|---|---|
| CA - California | Los Angeles County | CASTAIC | 91310 |
91310 ZIP+4 Code List
ZIP Code 91310 includes many ZIP+4 Codes. Each ZIP+4 Code corresponds to a specific address or group of addresses. Below is a complete list of all ZIP+4 Codes within ZIP Code 91310, along with their associated addresses. You can also find a 9-digit ZIP Code by entering a full address.
| ZIP+4 Code | Address |
|---|---|
| 91310-0001 | PO BOX 1 (From 1 To 36), CASTAIC, CA |
| 91310-0037 | PO BOX 37, CASTAIC, CA |
| 91310-0038 | PO BOX 38 (From 38 To 39), CASTAIC, CA |
| 91310-0039 | PO BOX 40, CASTAIC, CA |
| 91310-0041 | PO BOX 41 (From 41 To 118), CASTAIC, CA |
| 91310-0121 | PO BOX 121 (From 121 To 238), CASTAIC, CA |
| 91310-0241 | PO BOX 241 (From 241 To 358), CASTAIC, CA |
| 91310-0361 | PO BOX 361 (From 361 To 478), CASTAIC, CA |
| 91310-0481 | PO BOX 481 (From 481 To 598), CASTAIC, CA |
| 91310-0601 | PO BOX 601 (From 601 To 655), CASTAIC, CA |
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How to write a U.S. envelope?
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First, you need to fill in the recipient's mailing information in the center of the envelope. The first line is the recipient's name, the second line is the street address with a detailed house number, and the last line is the city, state abbr, and ZIP Code.
Second, write the sender's information on the left top corner of the envelope. If your mail cannot be delivered, it will return to the sender's address.
Finally, don't forget to stick the stamp on the right top corner. Otherwise, the letter will not go into the delivery process.
Here is the envelope example below.
What does each digit of ZIP Code 91310 stand for?
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The first digit designates a national area, which ranges from zero for the Northeast to nine for the far West.
The 2-3 digits represent a sectional center facility in that region.
The last two digits designate small post offices or postal zones.
Random Address in ZIP Code 91310
ZIP Code 91310 has 78 real random addresses, you can clicking the picture below to get random addresses in ZIP Code 91310.
ZIP Code 91310 Map
This is the online map of CASTAIC, Los Angeles County, California. You can use the controls to move around and zoom in or out. Map information is for reference only.
Nearby ZIP Codes to 91310
Nearby ZIP Codes include 91354, 91383, 91384, 91355, and 91380. These ZIP Codes are located within approximately 25 kilometers of ZIP Code 91310. The listed distances are approximate and provided for reference only.
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