How to Send a Package: Domestic

You Should Know

• For some shipping methods, like Media Mail^® 邮寄或邮寄活体动物时，您必须将包裹带到邮局柜台.
• You can get free Priority Mail Express and Priority Mail Boxes and Envelopes (even shipped to you for free!)，但请记住：如果你使用“特快专递”信箱，你必须缴付“特快专递”十大网堵平台的费用.
• When shipping to U.S. military bases abroad, you’ll pay domestic prices, though you’ll still need to fill out customs forms.

Prohibited Items

有些物品是禁止的（完全禁止）：你不能通过USPS发送它们, so you’ll have to choose another carrier. Prohibited items include:

• Ammunition, explosives, and fireworks
• Items containing liquid mercury
• Alcoholic beverages

Restricted Items

Other items are restricted: You have to follow the rules, stick to any limits, and properly package and label your items. Restricted items include:

• Lithium batteries (like the ones that come installed inside small electronics, like laptop computers or cell phones) are usually OK to send if the items are new (or a manufacturer-certified repair); if the items are used, they can only be sent via ground transport (can’t go on planes).
• 易腐物品（如植物或食物）通常是可以发送的，只要它们包装得当，不会变质或泄漏.
• Some items have special packaging requirements, or can only be sent via ground transport, like perfumes containing alcohol.

You have to follow all laws and USPS regulations. If you don’t follow the rules, you might face fines, or even criminal penalties.

If you have any questions about what you may ship through USPS, review the restricted and prohibited items list.

See More Details: Domestic Shipping Prohibitions, Restrictions, & HAZMAT

Review USPS Publication 52, Hazardous, Restricted, & Perishable Mail

Try the HAZMAT Shipping Tutorial

Choosing a USPS shipping service depends on where it’s going, how much you want to spend, how quickly you want it to arrive, what you’re sending (the contents of the package and its size, shape, and weight), plus any tracking or other special features you want to add.

For example, for packages up to 70 lbs, consider using USPS Ground Advantage, which will take about 2-5 business days to arrive. 如果必须更快到达，您可以使用特快专递或优先邮件十大网堵平台.

See more details and features: Mail & Shipping Services

NOTE: 如果您试图发送由于内容（例如含有有害物质或活体动物的物品）而无法通过航空运输的包裹，您也可以使用USPS地面优势。.

• 使用坚固的包装，有足够的空间为易碎物品增加缓冲，防止物品移动. 记住：你的包裹将通过自动处理机器，并与其他重达70磅的包裹共享空间.
• If you’re reusing a box (be careful: boxes can weaken during shipping), make sure all old logos, barcodes, shipping labels, and addresses are covered or blacked out.
• Use enough 2-inch-wide packing tape to close and secure all seams. (But please don’t wrap your box in string, cord, or twine, which gets caught in USPS sorting equipment.)
• 包装不能大于130”的总长度（最长的边）+周长（包裹周围的距离）, perpendicular to the length).

Tips for Measuring Packages

Learn how to measure a package. 2:35

Video Description: How to Measure a Package (TXT)

• Additional fees (like dimensional weight or nonstandard size fees) may apply. See Step 5, Calculating Postage

Pro Tips

• If you're going to use Priority Mail and Priority Mail Express service, 这些盒子有标准尺寸，您可以在您的邮局领取或在网上订购, free! Order Free Shipping Supplies
• 在盒子里放一张装箱单或一张写有收件人姓名和目的地地址的纸.
• Prepare your package before you bring it to the Post Office. 如果你需要包装胶带，带上你自己的，或者准备在邮局买一些.

Address Tips

• Use a pen or permanent marker.
• Print neatly using capital letters.

Write Sender Address

Write your address (the “return address”) in the top-left corner. Include the following on separate lines:

• Your full name or company name
• Apartment or suite number
• Full street address
• City, State, and ZIP+4^® Code

Write Delivery Address

将收货地址写在标签或包裹的中心位置（在寄件地址的下方和右侧）, if possible), using the same format:

• The recipient’s full name or company name
• Apartment or suite number
• Full street address
• City, State, and ZIP+4^® Code

Special U.S. Addresses

Puerto Rico

波多黎各的一些地址包括特定区域或开发的城市化或社区代码. Addresses with an urbanization, abbreviated URB, should be written on 4 lines:

MS MARIA SUAREZ
URB LAS GLADIOLAS
150 CALLE A
SAN JUAN PR 00926-3232

More Puerto Rico Address Examples

U.S. Virgin Islands

Virgin Islands addresses have the same format as standard addresses. The right abbreviation for this territory is "VI," not "US VI" or "USA VI":

MS JOAN SMITH
RR 1 BOX 6601
KINGSHILL VI 00850-9802

Military and Diplomatic Mail (APO/FPO/DPO)

Mail to military and diplomatic addresses is treated differently:

• 当您发送到另一个国家的APO/FDO/DPO地址时，不包括城市或国家名称. This keeps your mail out of foreign mail networks.
• Do include unit and box numbers if they're assigned:
  
  SEAMAN JOSEPH SMITH
  UNIT 100100 BOX 4120
  FPO AP 96691

More Details on Military Addresses

邮资将取决于你的包裹要走多远和你使用的十大网堵平台. It also depends on the package’s size and weight, 除非你使用的是“特快专递”或“特快专递”十大网堵平台的统一费率选项.

Postage Calculator

Make sure you're not underpaying on postage. When a package is sent without enough postage, 它可能会退还给你，或者收到它的人可能需要支付差额.

USPS价格计算器向导将向您展示如何测量您的包裹并为您计算国内邮费.

Calculate a Price

How to Pay for Postage

You can pay for postage a few ways:

• At the Post Office Counter: A retail associate will weigh your package, help you choose a shipping method, and tell you how much postage will cost. After you pay, they’ll print the postage and put it on your package.
• At a Self-Service Kiosk: The kiosk machine will walk you through the steps of weighing your package, paying for postage (using a credit, debit, or EBT card), printing the postage and attaching it to your package, and placing it in the drop-off bin.
• 使用邮票：您可以使用邮票或印刷邮资的任何组合，以增加您的总邮资价格. (You might need a lot of stamps, unless you’re using higher-value stamps.) You can buy stamps at a Post Office Counter or National Retailers like grocery and drug stores. You can also shop online for all stamps at The Postal Store^®.
• Use Click-N-Ship service：您可以在网上支付优先邮件和优先邮件速递邮资（以及何时使用） enhanced Click-N-Ship service, you can buy Priority Mail, Priority Mail Express, and USPS Ground Advantage postage at lower Commercial Rates); then, you can:
  • Print your shipping label on your own printer. (You don’t need special label sticker paper; you can use regular printer paper—just tape the printed label to your package with clear packing tape.)
  • Or, see USPS's options for printing shipping labels without a printer: With the USPS Label Broker^® 功能，你会得到一个QR码，你可以带着你的准备发货的包裹去 participating Post Office location. Or, when you use enhanced Click-N-Ship service, for $1.25 per label, we’ll print the mailing label and deliver it to you.

Additional Fees:

If your package is bigger than 1 cubic foot (12”x12”x12”, or 1,728 cubic inches) in volume, “dimensional weight” (DIM weight) may apply. 如果您被要求支付DIM重量率，而您没有支付，您将被收取额外费用.

如果你的包裹超过一定尺寸，你还需要支付额外的非标准尺寸费.

Additional Package Fees

Add-On Services

If you want insurance, proof of delivery, signature services, or other optional services, you’ll have to pay extra.

• 认证邮件®：获得您发送的邮件和收件人签名的证明.
• 挂号邮件®：USPS最安全的运输十大网堵平台-物品由手工处理, handled separately and securely, and signed for along every step of its journey. This takes longer, and you won’t get tracking updates. 收件人必须在包裹上签名以确认交付（或试图交付）。.
• 回执：你会收到一份打印的或通过电子邮件发送的送货记录，上面有收件人的签名. You can combine Return Receipt with other services, including Certified Mail, Registered Mail, Priority Mail Express^® service, and more.
• 成人签名：只有成人（21岁以上）才能在出示表格后签名 showing a valid government ID.

Find more details on Insurance & Extra Services.

NOTE: If your stamped 包裹厚于半英寸或重于10盎司-如果你把它放在你的邮箱取件, the carrier will leave it. If you drop it in a blue collection box or Post Office lobby mail receptacle, it will be returned to you.

Schedule a Package Pickup

当你准备寄出包裹时，USPS会到你的地址来取包裹! Save time—Schedule a Pickup online:

• Pick up during regular mail delivery (free!): USPS will pick up eligible packages for free.
• Pickup On Demand^® (premium paid service): For a fee, you can select a 2-hour period for the Post Office to pick up your packages.

• Check the dimensions. If you’re using your own packaging, dimensional (DIM) weight may apply, so always enter your package’s dimensions in the USPS Price Calculator to ensure you’re paying enough for postage.
• Use the correct package label. Make sure the label you’re using matches the packaging. (For example, if you use a Priority Mail Mailing Box or Envelope, you must pay the Priority Mail rate. Also, the only way to get Priority Mail Flat Rate pricing is to use a USPS Priority Mail Flat Rate Mailing Box or Envelope.)